6mm to 3.175mm Accurate Engraving Bit CNC Router Tool Adapter for Collet

Features: Engraving Bit CNC Router Tool Adapter after heat treatment and precision grinding,fine grinding,concerted and high precision size; suitable for engraving machine ER collet. Quality steel production,heat treatment, has good flexibility and abrasion resistance. Clamping force, high accuracy, good gripping stability. Commonly used in the engraving machine spindle motor folder knife, with the engraving machine collets use. Specification: Material: Steel Size OD to ID(mm): 6?3.175 Package include: 1 x Engraving Bit CNC Router Tool Adapter .Engraving Bit CNC Router Tool Adapter after heat treatment and accurate grinding,fine grinding,concerted and high accurate size; suitable for engraving machine ER collet. Quality steel production,heat treatment, has good flexibility and abrasion resistance. Clamping force, high accuracy, good gripping stability. Commonly used in the engraving machine spindle motor folder knife, with the engraving machine collets use. Engraving adapter is processed with accurate grinding, with great clamping force, high accuracy, and good gripping stability.