Features: Deburrs Inside And Outside Edges Of 1/2, 3/4, And 1 IN Thin Wall Conduit; Hooded Tip Tightens EMT Fitting Set Screws Without Slipping; Removable Head Interchangable With Ideal 7-In-1 Twist -A-Nut Screwdriver Shaft (35-908); Head Can Be Used In Dr