BORDO REDUCED SHANK HSS DRILLS118 ° notched point 30 ° helix DRILL BIT SURFACE TREATMENT Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating. This surface aids chip flow and heat dissipation. The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.
| Part no. | Title | Qty |
|---|---|---|
| 2651-5/8 | 5/8″ 1/2″ Reduced Shank Drill | 1 |
| 2651-3/4 | 3/4″ 1/2″ Reduced Shank Drill | 1 |
| 2651-7/8 | 7/8″ 1/2″ Reduced Shank Drill | 1 |
| 2651-1 | 1″ 1/2″ Reduced Shank Drill | 1 |
