Description
Alpha imperial cobalt drills are made extra tough from cobalt hardened steel for drilling hard, high tensile metal. Available in sizes 11/32” to 19/64″.
Features:
- Protects against the build up of heat
- Excellent strength and durability for an extended product life
- Single ended drill
- Suitable for substrates such as stainless steel, hardened steel, cast iron and bronze
Alpha imperial cobalt drills – quick reference
| Code | Size | Qty |
| 9LI116CO | 1.59 x 23mm flute, 1/16″ | 1 |
| 9LI18CO | 3.17 x 42mm flute, 1/8″ | 1 |
| 9LI1164CO | 4.37 x 55mm flute, 11/64″ | 1 |
| 9LI1364CO | 5.16 x 64mm flute, 13/64″ | 1 |
| 9LI1564CO | 5.95 x 67mm flute, 15/64″ | 1 |
| 9LI14CO | 6.35 x 70mm flute, 1/4″ | 1 |
| 9LI1764CO | 6.75 x 73mm flute, 17/64″ | 1 |
| 9LI1964CO | 7.54 x 81mm flute, 19/64″ | 1 |
| 9LI1132CO | 8.73 x 86mm flute, 11/32″ | 1 |
| 9LI1332CO | 10.32 x 94mm flute, 13/32″ | 1 |
| 9LI1532CO | 11.91 x 112mm flute, 15/32″ | 1 |
| 9LI12CO | 12.70 x 114mm flute, 1/2″ | 1 |
Imperial cobalt drills are often referred to as cobalt jobbers.
