Spring Collet, ER20 Collet Chuck CNC Machining Center, Accuracy 0.007mm CNC Engraving Lathe Mill Tool 1PC(5.5mm)

Includes 1pc of ER20 Spring Collet, Accuracy 0.007mm, Size refers to "inner diameter". Material -- High Precision Spring Collet is made of spring Steel, general hardness, and wear resistance. Design -- The angled slots increasing rigidity, ensures tight clamping force, keeps from dust and iron filings from entering, thereby averting the accuracy of the chuck being affected. Reliable -- Crafted from spring steel, the er20 collet set are dependable tools promoting high precision, elasticity, and a secure grip. Note -- Incorrect assembly may damage the accuracy of the spring collet and damage the nut!