For drilling out spot welds on most vehicle panels Contents: 1pc 3/8″ (9.5mm) spot weld cutter 1pc 5/16″ (8mm) HSS Cobalt spot drill 5pcs 3/8″ (9.5mm) Cutter head (M2) 2pcs Spare drill pin Contents:1pc 3/8 (9.5mm) spot weld cutter1pc 5/16 (8mm) HSS Cobalt spot drill5pcs 3/8 (9.5mm) Cutter head (M2)2pcs Spare drill pin