5C steel spare collet is made of material and is strong and durable. For CNC milling Lathe Tool Work holding Engraving machine. Range: 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1 inch. All collet surfaces are precision ground for a precise fit. Metal structure, strong and durable, not easy to rust.
