RUKO HSS Stepped Drill Bit Ø 4.0-20.0 mm (9 steps) for precise drilling.

The Ruko-101051 step drill bit is a high-precision tool designed for drilling sheet metal in various industries, including electrical, plumbing, heating, and automotive. Its innovative design incorporates a split point cutting edge according to DIN 1412 C, allowing for easier and more precise drilling starts. With a 118° cutting angle and a 90° taper angle, this drill bit ensures efficient and clean cutting, minimizing the risk of burrs and vibrations during use.

The CBN (Cubic Boron Nitride) grinding and spiral chip flutes optimize the cutting process, guaranteeing superior performance and quiet operation. Each step of the drill bit is radially adjusted and ground, providing greater durability and accuracy with every hole.

• Diameter: Ø 4.0-20.0 mm (9 steps)
• Cutting point: Split point DIN 1412 C
• Cutting angle: 118º
• Cone angle: 90º
• Right-hand cut
• Material: HSS (High-speed steel)
• Capacity: Suitable for sheet metal up to 4 mm
• Spiral chip ejection channel design
• Translucent plastic case with hanger
• Laser-marked steps