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Your cart is empty.The Black & Decker MTD100 3-in-1 Removable Mower Deck is actually 3 tools in 1, which can easily convert a 12 trimmer/edger to a mower. It has an adjustable height deck (2 settings) for ideal cutting height. Compatible with: NST2118, LST220, LST300, LST400, LST522, LSTE522, LSTE523, LSTE525. It also features a wall hanging option to make storage much easier when not in use. This mower deck is ideal for smaller sized yards (ideal for properties up to 700 sq. feet) and also great for inclines or areas difficult to mow with standard mowers. Unit includes: (1) MTD100 detachable mower deck. (String trimmer not included).
Rebecca Overman
Reviewed in the United States on June 2, 2025
Omg! Finally a solution to the hill for our house. We have tried lawn mower, etc for taking care of our yard but,this works for us! We are of a certain age that makes lawn mowing difficult. This is a great solution for us. We have a hill that usually takes with of us to complete. Makes mowing that hill so much better. This is light and not difficult yo use.
Sarah Verwij
Reviewed in the United States on May 22, 2025
Very satisfied with this purchase as we already had a B&D weed-eater/edger and didn’t want to spend a fortune on a new electric mower for our tiny yard (we currently use a reel mower). It kind of feels like you’re using a vacuum cleaner to mow the yard, but you quickly get used to it. It gets a great consistent length and was able to mow our front and back yard on 1 full charge of our 20V battery. I have a feeling that we’ll still have to use our reel mower first if the grass gets long enough with how much rain we’ve been getting. If you typically mow and edge/weed-eat afterwards, do yourself a favor and buy a 40V and more string as well.The only flaw we found was changing the wheel height. It can be a little tricky moving them up and down at first, but overall, very easy to put together as long as you check the model of your weed-eater first!
Paul Ryan
Reviewed in Canada on July 20, 2020
It's a wonderful thing. Bought just the wheels, as my weed eater was compatible. I have extra batteries, which makes it perfect. My grass areas (can't really call them lawns - small island with little rain and no mains water for irrigation) amount to one third of an acre, so not really small. This copes with it all and makes mowing a pleasure. Uneveness and stones are no problem for it. Don't know how I managed before - a mower with solid blade would be wrecked in hours, because of the stones and uneveness. The strimmer line deals with anything and everything. Sad to see it's no longer available. As a follow on note to a previous review from another customer: DO NOT hose it off after use. It says quite clearly not to on the box. There are metal parts to this and they will just rust.
zephyr064
Reviewed in Canada on June 18, 2020
While I have a very small lawn, I waited quite sometime for this to be delivered. When I got it, my grass was very long, so it does have a problem with cutting long grass. Therefore this must be done regularly and not to let it get too long. I purchased this as an attachment for a B&D grass trimmer that I already had. Thankfully, it was compatible. It's small and compact enough to let me store it indoors (after washing of course and it cleans up really nicely with just the garden hose). As you might have seen in the product photos, this does not have a bag and it doesn't shoot out the sides, so you'll have to rake up any long grass leavin's. With the 18V trimmer, it lasts about 20 minutes, so you'll want to have a couple of batteries charged. Do yourself a favour and purchase the rapid charger to. While this is a neat product and it is space saving, I'm kind of hesitant to recommend this product at the $80+tax price tag. For me, it was the only choice and I don't have a proper storage area for a larger electric/battery powered mower. For the price, I'm removing one star, but the rest, it's been pretty good.
Samuel
Reviewed in Canada on August 14, 2019
Fits perfectly my LSTE 525 even though it’s not in the list I took a chance to try and it fits!!!Not as good as a regular lawnmower but for small areas it’s faster than getting the big lawn mower out and it’s lighter.A bit unbalanced once the battery is in place but still good.
Marty K.
Reviewed in Canada on July 6, 2019
I read some reviews and users said it was flimsy and trimmer fell out of the deck. I experienced no such problem. My B+D LST300 trimmer snapped securely in place and cutting the grass was the same motion as vacuuming your carpet. This worked very well and I am very pleased with the price, value and convenience. Deck is easy to disconnect from the trimmer and can hang on the wall in your shed without taking up any floor space. Love it!
BY in HI
Reviewed in the United States on November 11, 2019
Full disclosure - I've only used this once, but it was with severely overgrown weeds on a large, uneven yard. Yes, it took a long time to finish the job but it was sooooo worth it. As I said, my lard is uneven - not level, holes from rotted tree roots and lots of random rocks. I've broken my lawn mower several times and was tired of paying for repairs. I'd been doing the yard with a weed whacker but that was tricky. My yard often looked like a three year old who'd given himself a haircut. When I discovered this attachment for my weed whacker I was amused. Then the more I thought about it, the more it made sense - weed whackers don't care about rocks or uneven ground.There was a lot of conflicting 'will it fit my model' stuff online but I figured it was worth the gamble. When it arrived I tried to get it to fit with my Black & Decker electric but I couldn't make it fit. The more I looked at it the more I realized it wasn't the whacker itself, it was the debris guard - it was 14 inches and the mower deck requires 12 inches. After a quick look on Amazon for the 12 inch guard and a couple days of waiting, I was able to put the whole thing together and it worked! I believe my whacker is either 900 or 912 model.I plugged my whacker in and gave it a go - perfection! So light, so easy to maneuver, and small so it fit into places my regular mower wouldn't fit. What about the over knee-high weeds? Yes, it did take some back and forth, but it wasn't any more difficult than using a vacuum. In fact, I found that motion to be the most effective when going over the really long, heavy weeds. For the shorter stuff, long lines works fine. And because the mowing deck covers the entire string area, there's no debris getting thrown everywhere and the cut stuff says down - much easier to go back over with a rake or leaf blower/vacuum. And when you do need it in whacker mode, for fence lines and such, you just pop it out of the mower deck and off you go.
Craig Schultz
Reviewed in the United States on June 29, 2017
I "hate" this! Actually, I "hate" that I bought an almost $400 20-inch cordless mower when this, and the string trimmer from Black & Decker I had already, did ALMOST as good of a job of mowing my small, ~1/8th acre lawn.Truth be told, I am actually happy that I have both as it gives me more options and I will definitely need it when the high heat of summer hits but I can easily say that if I didn't have the larger cordless mower, I could easily have made do with this.I found this to have absolutely no issues as others have described, such as it being flimsy or becoming unlatched or difficult to adjust in cutting height or, being able to wack its way through taller grass or, not being able to get it latched again after using it for a bit and then removing the trimming to do some side trimming and then inserting it back into the cradle.On the 'taller grass' note, this makes it through easier than my larger cordless mower and my larger cordless mower is no slouch either.As an experiment, I tried cutting the grass when it was VERY wet and sure enough, when I removed the trimmer and then tried to reattach it again it wasn't as easy to lock in to the cradle but, just do NOT cut very wet grass, which one shouldn't do anyway, and as far as I can tell, one should be good to go.Also, I used the "carpet vacuum" technique of mowing around me in all directions as opposed to going in straight lines across the entire width and length of the lawn and never once had it unlatch on me when turning it around by partially dragging it sideways.One suggestion I could make to people using this is to not actually install the screw in the string trimmer that "holds" the trimmer shield on so that when it comes time for clean up, one can remove the shield and hose it off, along with this trimmer cradle, without having to use a screw driver.To be honest, I don't know why that screw is needed in any event because it latches to the power head of the trimmer very securely anyway.Also, get yourself a 4.0ah battery. I didn't even bother trying to use this with the stock battery, which is only a 1.5ah battery. Get a 4.0ah battery and you will be MUCH happier!The only negative point about this unit is that it only provides two different cutting heights, "short" and "too short". ;-) Seriously though, the turf on my lawn is comprised of a tall fescue and so during the height of the summer is best cut at a height of 2-1/2 to 3 inches.Seriously though, the highest setting is, if I remember correctly only 2-1/4 inches which is fine for me for the Spring time when the grass is growing quickly and there is sufficient rain so that shorter grass blades which lead to shorter roots are not a problem but in the summer, if my grass is cut that short, it is guaranteed to brown out. Even just going to 2-/12 inches, which doesn't seem that much different would be enough. Maybe I can figure out a way to transmorgify it to allow for a higher cutting setting but then again, I've got too many projects to get to before worrying about that.In any event, this thing ROCKS, HARD and practically everyone on my block who has seen me using it all have said that they want one!
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