HIGH PRECISION 1PC ER20C 8MM STEEL SEALED COLLET TIR 0.0004" / 10μm USA SELL

HIGH PRECISION 1PCS 8MM ER20C STEEL SEALED COLLET TIR 0.0004" / 10μm CNC ER20 TOOL HOLDER. Concentricity is less than. 0004 at face and arbor (TIR). All critical surfaces precision ground. All critical surfaces are precision ground for accurate fit.