Model 35-098 Tool Swivel Head Deburring Tool W2960 Deburring Tool Head I Tested the Best Twisting Tool for Wire: My Top Picks and Tips for The Twist-a-Nut conduit deburring tool is used by electricians to smooth the inside/outside edges of conduit after cutting it to length. Hooded #2 square tip seats much more quickly on EMT fitting screws Twist-a-Nut Conduit Deburring Head only Square Tip. The conduit-fitting and reaming tool can ream and smooth 1/2 in., 3/4 in., and 1 in. thin-wall conduit. It features a hooded-blade design that keeps the screwdriver tip from slipping out of screws, which is especially handy when tightening hard-to-reach conduit fittings. This screwdriver has a longer chion-grip handle for even more comfort... Twist-a-nut Deburring Tool-head Only-square Tip, 35-098