drill bits & sets
irwin unibit unibit 2 hss step drill bit 3 16 1 2 step1 16
hss step drill bit size 3 16 1 4 5 16 3 8 7 16 1 2 in . shank size 1 4 in . number of hole sizes 6 step thickness 1 16 in br b features b ul li includes li li item step drill bit li li material high speed steel li li size 3 16 to 1 2 li li design ensures true starts without walking even on curved surfaces li li number of hole sizes 6 li li step thickness 1 16 li li shank size 1 4 li ul
irwin unibit