RUKO SPB Reduced Shank Twist Drill Bit 13.5mm HSS-Co

Precision-ground 13.5 mm twist drill bit with a self-centering split point and cobalt-alloyed HSS for high heat resistance—engineered for stainless steel and demanding alloys.

Overview

The RUKO SPB reduced-shank drill bit combines a 13.5 mm cutting diameter with a 10 mm shank, allowing use in standard drill chucks. Manufactured to DIN 338 with a bright finish and h8 tolerance, it delivers accurate holes in alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics.

What stands out

• 135° split point for self-centering and reduced walking
• Fully ground from HSS-Co for high heat resistance and long life
• Reduced shank (10 mm) fits standard 13 mm chucks
• Right-hand cutting, bright finish, h8 tolerance

Technical details

• Drill bit type: Twist drill bit
• Material: HSS-Co (cobalt-alloyed high-speed steel)
• Diameter: 13.5 mm
• Shank type: Reduced shank
• Shank diameter: 10 mm
• Overall length: 160 mm
• Flute length: 114 mm
• Point angle: 135°
• Point type: Split point (cross-ground)
• Cutting direction: Right-hand
• Manufacturing process: Fully ground
• Standard: DIN 338
• Tolerance: h8
• Surface finish: Bright
• Suitable materials: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics

Our verdict

A professional-grade cobalt drill bit for tough materials, with a reduced shank that expands its versatility in standard drills.