12 in. x 9 in. Walking Power Groover with 1-1/2 in. Bit12 in. x 9 in. 1 1 2 in. bit 5 8 in wide and 1 4 radius Concrete Walking Power Groover Without Handle groover makes smooth consistent grooves in concrete slabs. 2 Way clevis adapter accepts both long and short clevis handles. Rivet free design ensures clean control joints every time. Cuts sharp clean grooves. Broken in front and back. Bits are curved in front and back. No Handle.