Alpha cobalt stub drills are designed for use with rivets and feature a cobalt coating, making them ideal for drilling into harder metals (10/pack).
- Double ended for twice the product life
- Made from cobalt hardened steel for ultimate strength and durability with high speed drilling
- Suits standard sized rivets
- Use with materials such as stainless steel, hardened steel, cast iron and bronze
Alpha cobalt stub drills – quick reference
|A-9D11CO||#11 for 4.8mm (3/16″) rivets||10|
|A-9D20CO||#20 for 4.0mm (5/32″) rivets||10|
|A-9D30CO||#30 for 3.2mm (1/8″) rivets||10|
Cobalt stub drills are often referred to as panel drills.