6" x 6" 3/8"D 1/4"R Stainless Steel Walking GrooverStrong long wearing #16 gauge stainless steel blade Makes 3 8 In. deep groove Creates 1 4 In. radius to prevent chipping of concrete Turned up edges to move smoothly through concrete Cuts control joints in concrete Groover bit extends out to push thru the concrete Stainless steel won't rust Reinforced with back plate Rivet free for a smooth finish All angle bracket can move 360 Toothed bracket locks angle in place Use with a clevis handle, sold