M35 Cobalt Drill Bits, 135 Degree Tip Twist Jobber Length Drill Bit Set High Speed Steel Helix Secure Grip Bit Kit Hardness Metal Cast Iron Alloy Aluminum Stainless Steel Plastic Wood Copper 10Pcs 3mm - Joyzan, Joyzanm3giwep06s-05

• 135°Split Point and Twist Design: The cobalt drill bits set is 135°split point with a round straight shank, self centering prevents walking, and high speed steel cobalt drill bits makes drilling precise and faster. Double back angle process and full grinding process is adopted fully ground process twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance Cobalt 5% HSS: High speed steel m35(cobalt 5%)135 degree tip cobalt drill bits can effectively drill tough and high tensile materials, the twist jobber length drill bit kit is especially suitable for cutting hard metals, such as stainless steel, cast iron, super alloys, titanium alloys, rigid plastics, and wood, m35 HSS jobber length twist drill bit can also be used in soft materials Perfect Drill Bits: Cobalt drill bits for cast iron has precision grinding process for a clean surface and high grinding accuracy. Universal round drill shank, cobalt drill bits for hardened metal widely applicable of tool holding systems and tightly clamped M35 Cobalt High Speed Steel: Industry grade cobalt drill bits for stainless steel, much harder than HSS used in other similar cobalt drill bits for plastic, increases wear resistance and durability Quick Change: Cobalt drill bits for wood and m35 cobalt drill bit kit is easier and safer to install in all power tools, especially for locking quick change chucks without slipping and falling off