⚡ Drill smarter, last longer — the pro’s secret weapon!
The JK Super Drive 4mm HSS Straight Shank Jobber Drill Bit pack offers precision cutting with a 4mm diameter and extended flute length for deep drilling. Engineered from hardened alloy with a 67 hardness rating, these bits deliver up to six times longer life than average HSS bits. Designed for high-speed operation at 1500+ RPM, they excel in cutting tough metals like stainless steel and cast iron, making them an essential, durable toolset for professional-grade metalworking.
| Material | Hss |
| Cutting Diameter | 4 Millimetres |
| Finish Type | Black Oxide |
| Shank Type | Straight |
| Cutting Angle String | 118 Degrees |
| Brand | JK Super Drive |
| Tool Flute Type | Straight |
| Surface Recommendation | Metal |
| Number of Flutes | 1 |
| Net Quantity | 10 count |
| Manufacturer | JK Files (India) Limited |
| Number of Memory Sticks | 10 |
| Item Weight | 100 g |
| Package Dimensions | 9 x 6 x 6 cm; 100 g |
| Item part number | JK_Jobber_4MM |
| Power Source | ac |
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