RUKO HSS drill bits, pack of 10, self-centering, Ø 4 mm, extra short and ground.

The Ruko-251040 drill bit set is a pack of 10 extra-short HSS (High-Speed Steel) face drill bits, designed to deliver exceptional performance in assembly work on thin-walled materials. Shorter than the DIN 1897 standard, these bits are ideal for drilling sheet metal, flat iron, and profiled steel, ensuring high resistance to breakage. Their design allows for efficient use in hand drills, facilitating work in confined spaces.

The bits feature a tapered point with a split point, conforming to DIN 1412 C, which ensures good centering and requires minimal pressure during use.

• Material: HSS (High-Speed Steel)
• Length: Extra short, shorter than DIN 1897
• Cutting Angle: 118°
• Diameter Tolerance: h8
• Surface: Bright
• Cutting Edge: Right-hand
• Applications: Steel, gray, malleable and nodular cast iron, aluminum alloys, bronze and brass
• Tensile Strength: Up to 900 N/mm²
• Case: Translucent plastic with blue background label
• Use: Hand drills