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, with detailed dimensions for fractional sizes from 1/8" to 1-3/8". It also describes the CBN-ground flute and relief angle features, split point design, and includes information on three-piece step drill bit sets and jobber length drill sets.