PROLINE HSS TIN STEP DRILLS FOR METAL 3 PCS. (4, 4.6MM)

PROLINE HSS TiN Step Drill Bit Set – a 3-piece set for precise reaming and countersinking in thin-walled sheet metal, metal, and plastic. The TiN coating and HSS 4241 high-speed steel ensure longer life and rapid heat dissipation during drilling. Self-centering on rounded surfaces prevents the drill from "runaway," leaving hole edges clean and burr-free – ideal for workshop and assembly work.

• Designed for metals, thin-walled steel sheets, and plastics
• The edges of the drilled hole remain clean and burr-free
• The drill does not run away on rounded surfaces
• Self-centering on rounded and slippery surfaces, rapid heat dissipation when drilling hard materials
• Made of HSS 4241 high-speed steel, coated with titanium nitride
• Cylindrical handle
• 77800- 4, 6, 8, 10, 12
• 77801- 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30
• 77802- 6, 8, 13, 16, 19, 21, 23, 26, 29, 32, 35, 38