Control stress cracks in your concrete slab with the Marshalltown Stainless Steel Hand Groover. The groover blade is made of stainless steel with sturdy steel mounting. A properly shaped bit and leading edge cut a sharp ½” deep groove.Features Blade made of stainless steel with sturdy steel mounting Properly shaped bit and leading edge cuts a sharp groove Resilient DuraSoft® handle provides a soft feel, reduces fatigue, and offers excellent durability Bit Size: 1/4" radius, 1/2" width, 1/2" depth Specifications DuraSoft® Handle Type: Groover