Price last checked Nov 8, 2026. It may have changed, so confirm on the store's page. We earn a commission on purchases (details).
Cobalt drill bit are made of cobalt high speed steel and they can be sharpened.They are especially good for drilling hardened steel,cast iron,titanum and abrasive materials. 100% new, good price, good quality - High-speed steel drill bit - Made of high quality high-speed steel - High quality fully grounded body structure - Drilled wood, plastic, fiber, acrylic, aluminum, iron, copper, stainless steel - Self-centering separation points allow you to drill directly to the desired size without any pre-drilling - Straight shank of standard drill chuck Size: 1/8(3.2 mm) 5/32(4 mm) 3/16(5 mm) 1/4(6.5 mm) 5/16(8mm) 3/8(9.5 mm) 1/2 (13mm)