
Makita 牧田 D-40135 HSS-TIN階梯鑽4-32(直式)
鑽咀/批咀
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The Makita D-40191 HSS-TiN step drill bit features a spiral flute design with a diameter range of 4 to 32 mm across 9 steps, ideal for drilling in various metals and plastic sheets. Made from high-speed steel (HSS) with a titanium nitride (TiN) coating, it offers enhanced wear resistance and extended tool life. The spiral flute geometry enables faster chip evacuation, cutting up to twice as fast as conventional straight-flute step bits. The 10 mm straight shank with three flats provides a secure grip and is compatible with 1/4" bit holders.
| Model | D-40191 |
|---|---|
| Diameter Range | 4 - 32 mm |
| Overall Length | 102 mm |
| Working Length | 80 mm |
| Shank Diameter | 10 mm |
| Shank Type | Straight shank, three-flat |
| Coating | TiN (Titanium Nitride) |
| Material | HSS (High-Speed Steel) |
| Number of Steps | 9 |