This is the dedicated blade edger in the Craftsman line, and the only tool here that cuts a true trench. It weighs about 8 pounds, rolls on wheels, and has an integrated edge guide that tracks along sidewalks and driveways. The listing says it is designed around a 2.0Ah battery that is sold separately.
A blade edger digs a vertical wall with a clean edge, which a string trimmer tilted sideways cannot match. That makes the CMCED400B the right choice for a crisp border, and the wrong choice for someone who only wants a general trimmer. As a bare tool it needs a V20 pack, which is a poor deal if you do not already own one. Against the CMCST900B it is a very different tool, aimed at a different task.
Store it with the battery removed, brush soil from the guard and inspect the blade after each use. The renewed version of the same model exists, but a new unit is the safer choice for a warranty. Because the pack in the listing is only a 2.0Ah unit, plan your edging in two short sessions on a long driveway, and let the pack cool between them, since a hot pack charges poorly and loses capacity faster than one that is allowed to rest. Set the blade depth shallow on the first pass.
What works
- True blade edger with a vertical wall
- Rolls on wheels at about 8 pounds
- Integrated edge guide
- Shares the V20 battery family
Watch out for
- Bare tool, battery is extra
- Designed around a modest 2.0Ah pack
Spec sheet
- Type
- Cordless wheeled blade edger and trencher
- Platform
- V20 battery, sold separately
- Weight
- About 8 pounds
- Guide
- Integrated edge guide
- Battery note
- Designed around a 2.0Ah pack





