RUKO Self-Starting Step Drill Bits Specifications and Pricing

This document provides specifications and pricing for RUKO self-starting step drill bits available in High Speed Steel, Titanium Nitride-coated, and Cobalt 5 alloy variants. It details drill sizes, step increments, shank diameters, overall lengths, and highlights CBN-ground flutes, axial and radial relief, and split point geometry for enhanced cutting performance and tool life.