The Irwin UNIBIT HSS fractional self-starting step drill #5, 1/4 to 1-3/8 in, is ideal for drilling clean, smooth holes in mild steel, copper, bass, aluminum, plexiglass, wood and laminate. Crafted of HSS, it has a SpeedPoint® tip that guarantees fast starts and a single-flute cutting edge for drilling true, round holes with a precise step control for multiple sizes. Hole sizes are permanently laser-etched on the inside of the flute and will not wear away for easy identification throughout the life of the bit. The bit features a quick change hex shank that secures easily in the drill chuck.
| Id | 257289 |
| SKU | 6978340 |
| PartNo | 10232 |
| UPC | 038548101026 |
| Diameter | 3/16 To 1/2 In |
| Number Of Flutes | 1 |
| Shank Type | Hex |
| Shank Diameter | 1/4 In |
| Material | HSS |
| Finish | Black Oxide |
| Applicable Materials | Aluminum, Brass, Copper, Plastic, Stainless Steel |
| CID | 9 |
R.P. Lumber - Edwardsville, IL