Gripping Range :1/8, 1/4"; 3/8"; 5/16", 1/2"; 5/8"; 3/4". Application:Suitable for boring, milling, drilling, tapping, engraving, CNC, spindle machines, and other processing. Premium Quality:These spring collets are made of spring steel, they are stable and practical in performance.. Accuracy: 0.0003" or 5um.
