| Procuct Name | 9Pcs Tri Flat Shank Straight Flute Amber Color HSS Step Drill Bit Set for Multiple Hole Tube Sheet Drilling in Aluminum Case |
| Size | 1/8-1/2", 1/8-7/8", 3/16-1/2", 3/16-7/8", 1/4-3/4", 1/4-1 3/8", 7/16-1 1/8", 9/16-1", 1 3/16-1 3/8" |
| Material | HSS (Cobalt M35 is Available) |
| Flute Type | Straight Flute (Spiral Flute is Available) |
| Flute Number | Two Flutes (Single Flute, Three Flutes are Available) |
| Shank | Tri Flat Shank (Quick Change Hex Shank, Round Shank, Double R Shank are Available) |
| Surface Finish | Amber (TiN, Bright, Co-coated, Black Oxide, Black & Bright, TiAIN are Available) |
| Package | 9Pcs in Aluminum Case |
| Features | 1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm. 2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center. 3. A variety of hole diameters can be drilled using only one tool. 4. The dimension of drilled hole is exact. 5. Two Flute Design: provides longer life and better chip removal. 6. Only for rotary use. |