Walking Wheelchair Safety Groover SS 6" x 7-1/2" (4 grooves) 2" on CenterUse this groover to cut safety grooves for wheelchair ramps and other non skid areas. A popular choice for commercial and government jobs. The 6" long heavy duty stainless steel blade moves smoothly through concrete driveway and sidewalks. This groover creates four 1 4" deep, 1 4" wide grooves 2" apart on center. These parallel lines provide a safety tread effect on high traffic areas such as driveways, sidewalks, and stairs. The 7 1 2" tool provides