115 Piece Cobalt Drill Bit Set For Hardened Metal Wood And Plastic M35 High Speed Steel 135 Degree Point Jobber Length With Indexed Storage Case One Sixteenth To One Half Inch Letter And Number Sizes

The 115-piece cobalt drill bit set delivers high-performance cutting in hardened metal, wood, and plastic. Built with 5% cobalt alloy (M35) and high-speed steel for durability, these bits resist wear for longer life. The 135° split point helps start quickly with less pressure and reduces walking, while the included indexed storage case keeps fractional, letter, and numbered sizes organized for fast changes on the job.

✅ 115-piece set includes 29 fractional sizes: 1/16 to 1/2 inch in 1/64 increments
✅ 26 letter sizes: A to Z
✅ 60 numbered sizes: #1 to #60
✅ Includes drill bit holder with size index for easy storage

💡 What is a cobalt drill bit set best used for in metalworking and why choose cobalt alloy bits? These bits are built to handle tougher materials and last longer. - Designed to cut through hardened metals, wood, and plastics - Cobalt alloy increases wear resistance for longer bit life - 135-degree split point reduces walking and improves starting accuracy - Includes a full size range and organized storage for quick on-site changes