Tenders for Supply of Drill Bit 10 Mm Dia. Solid Carbide With Drill Bit 10 Mm Dia. Solid Carbide With Coolant Thru For Station -1 Sema In A Machine Shop. As Per Rwf Drawing Number Rwf-A-Tl-079.. Drill Bit 10 Mm Dia. Solid Carbide With Coolant Thru For Station -1 Sema In A Machine Shop. As Per Rwf Drawing Number Rwf-A-Tl-079.