Home » Tender for Supply Of Solid Carbide Through Coolant Drills With A Diameter Of 8.5mm, A Flute Length Of 110mm, And An Overall Length Of 160mm. The Drills Are Multilayer Tilan Coated And Feature A Micrograin Size Of 0.2 Micron With 12% Cobalt Content. Solid Carbide Thr, India