drill bits & sets
irwin unibit unibit 11 hss step drill bit 7 8 in shank 3 8 in
hss step drill bit size 7 8 in . shank size 3 8 in . number of hole sizes 1 br b features b ul li includes li li item step drill bit li li material high speed steel li li size 7 8 li li design ensures true starts without walking even on curved surfaces li li number of hole sizes 1 li li step thickness li li shank size 3 8 li ul
irwin unibit