Black & Decker MTD100 Detachable Mower Deck for Black & Decker Trimmers

Black & Decker Model: bdknmtd100
ratings        (8) Write A Review

$99 and Under Sale! Price reflects discount See Details

See More
See Less
free shipping

Estimates For

alert warning icon

  • In Stock


CA Residents
Prop 65 Warning
compliance warning icon
WARNING: Cancer and Reproductive Harm --
Black & Decker MTD100 Detachable Mower Deck for Black & Decker Trimmers Black & Decker Model: bdknmtd100
price for vip customer


Product Features & specs :

Black & Decker MTD100 Detachable Mower Deck for Black & Decker Trimmers

Easily convert your favorite Black & Decker trimmer in a compact mower with this detachable mower deck. Features adjustable cutting height, rugged design and convenient wall hanging storage option when not in use.
  • Easily converts trimmer/edgers into a compact mower
  • Adjustable cutting height for ideal cutting performance settings
  • Convenient wall hanger built in for storage options
  • Compatible with Black & Decker's NST2118, LST220, LST300 and LST400 Trimmers
What’s Included:
  • Detachable Mower Deck - MTD100
Compatible Models
Detachable Mower Deck
23.38 in.
15.31 in.
5.75 in.
4.63 lbs.
Warranty Term
2 Year

Reviews :

4.3 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend this product?
Yes (3)
Lightweight (1)
Rated 4 out of 5
Worth the money.
Works as advertised. Has not come loose when lifting unit. Really helps on hilly ground.
October 22, 2020
5 months ago
Rated 4 out of 5
Long time owner
So, I don't remember how long ago I got this, but I have the deck and an LST 400 trimmer from before there was a lithium combo bundled for this product. I'm on at least my 3rd summer using it. Overall I've been incredibly happy with the ease of use and functionality. I have a small city lot, so this is my only mower. I have about 700 sqft of lawn, so it's the perfect size to use this for everything. There are a few key things that have always been problematic.

1. The way the trimmer connects to the deck has a habit of coming detached. This is especially true as you use it over time. Cleaning the deck thoroughly makes it stay together better, but it still pops out pretty easily and it's had that issue as long as I remember. I wish there was some form of latch to lock the trimmer into the deck. This would make it much easier to use.

2. I have a very bumpy lawn and the lower height setting is worthless here, so I always keep it set to the higher setting. Because the wheels adjust but do not lock into the height in any way, they tend to drop to the shorter setting and sometimes I have to adjust this 2 - 3 times in a single mowing.

3. The height / angle for the handle is awkward for mowing. If you do ever redesign this, it may be worth putting the deck on a slight tilt to raise the angle on the handle.

All that said, these are pretty minor things and otherwise I love the ease of use of the product and would recommend it to others who have the right size lawn for it. If you fall into that group with the tiny city lawn, this is a great easy way to deal with it and you don't have to keep multiple tools or deal with gas, but it's not for everyone.
August 12, 2018
Originally posted at
Rated 5 out of 5
Would you recommend this product?
Trimmer mower deck
Perfect for trimming under the boat and trailer. Detaches easily for trimmer use.
June 18, 2016
Rated 4 out of 5
mostly very satisfied
The 2 position height adjustment is easy to switch between, but the high cut height still leaves the grass too short. To maintain that short height, you need to re-cut every other day. B & D should make larger wheels which would make the high cut higher. Either that or make a deck with more height adjustments. And make either option available to current owners free or at a reduced cost.
May 31, 2016
Originally posted at
Rated 5 out of 5
Would you recommend this product?
Much needed accessories for my B&D LST400 line trimmer
just what we needed to get the grass where our lawn tractor could not reach. Easily to add or remove line trimmer.
August 11, 2015
Rated 4 out of 5
3in1 awesome mower
i love this baby its simple, light easy to use, i have a 20 ft. by 1 ft. island of grass and its perfect for that but theirs weeds that a metal blade should use or completely remove by hand then a plastic feed line. wheels adjust and i was finish faster then using my regular mower first then get the cord and use my weedwacker out to roam. Cordless is the best, cuts down on time setting up. if you have small place get it. its worth it.
April 30, 2015
Originally posted at
Rated 5 out of 5
The best and easiest mower i have ever used, then i can strim too! Small foot print, easy to store, easier than a vacuum cleaner, easy to get in and out small spaces. Some one who is semi disabled can use this! GREAT VALUE!
April 24, 2015
Originally posted at
Rated 3 out of 5
Would you recommend this product?
great idea, only issue with locking
I so wanted to give this more stars, but i purchased it specifically to mow the hill i have in my lawn & the trimmer constantly comes out of the deck because the locking mechanism is too shallow! It works wonderfully on flat surfaces & i like having 2 height adjustments.
May 27, 2014

Q & A :

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 2 answers
will it fit a homelite trimmer?
rod l on Apr 21, 2018
Hi, I have a trimmer GH900. It is posssible to use a MTD100 accesory?
Gaston on May 9, 2015
BEST ANSWER: This product is compatible with Black & Decker's NST2118, LST220, LST300 and LST400 Trimmers. No other models or brands are guaranteed to be compatible.


Warranty Information

Black & Decker Tools and Home Products

Warranted for two (2) years from date of purchase. This warranty does not cover damage resulting from negligent handling, misuse or lack of reasonable maintenance and care. (Proof of purchase maybe required).