HIGH PRECISION 1PC SER20 1/4" STEEL SEALED COLLET TIR 0.0002" / 5μm USA SELL

HIGH PRECISION 1PCS 1/4" ER20 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.