This ER collet is used for CNC milling lathe tool and engraving machine.Collet must be placed into collet chuck nut before inserting into collet chuck. Specifications:Model: ER25Clamping Diameter: 1/2-inchMaterial: 40Cr SteelPrecision: 0.015mm / 0.0006-inchTotal Height: 34mm / 1.34-inchOuter Diameter(Max): 26mm / 1.02-inch Package Includes: 1 x Spring Collet.
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