Home » Tender for Hss Parallel Shank Drill Bit (high Cobalt) .#* Hss Parallel Shank Drill Bit (high Cobalt) As Per Is :5101:1991 Chemical Comp
osition Grade Designation -xtiiomoioco8cr4w2 (co 7.75 - 8.75) As Per Is:7291-1981,size 4.2 Mm
(d) Optimum Drill Bit Tip Type A/d O, India