RUKO Drill Bits & Parts Quick-helix drill bit 616456 - RUKO 101003, The Ruko 101003 Quick-helix drill bit, crafted from high-speed steel, features a triangular shank for better torque. This sheet metal quick-helix drill bit is ideal for drilling into materials with thicknesses ranging from 16 to 30.5 mm. It is designed for use in professional metalworking applications. RUKO 101003 Quick-helix Drill Bit Tri Shank 16-30.5mm HSS 1pc
