29 pcs. cobalt drill bits set for metal in the TOUGH CASE. Faster drilling - up to 4 times faster compared to standard HSS-R drill bits. 50% higher durability than standard HSS-R drill bits. Free drilling and clean hole with greater accuracy. The special design reduces the likelihood of breakage. The iron oxide coating limits overheating and extends durability. High-quality alloy steel material with 5% cobalt content reduces overheating when drilling very hard materials.

Drill bit diameters:

• 1.1
• 2
• 2.5
• 3
• 3.2
• 3.3
• 3.5
• 4
• 4.2
• 4.5
• 4.8
• 5
• 5.5
• 6
• 6.5
• 7
• 7.5
• 8
• 8.5
• 9
• 10.5
• 11
• 11.5
• 12
• 12.5
• 13