Check the listing for details. 13Pcs Precision R8 Collet Set Mill Collets Set Taper Spindle for 1/8''-7/8''. Condition: New. Listed at 52.99 USD. From the brandPrevious pageKUNTECABOUT USKUNTEC focuses on providing all kinds of AUTO REPAIR TOOLS with top quality, such as engine timing tool, disc brake caliper tool, diagnostics tester...Whether you are professional or amateur mechanics, you will find suitable tools.DEVELOPMENTOur company always adheres to the tenet of "QUALITY FIRST", focuses on the development of new products, and continuously strengthens the enterprise, and will serve all customers with high-quality productsNext pageProduct DescriptionFeatureUse to cut keyways, hold double end mills, and moreEach of the collets has an internal thread to allow you to tighten into the millThis unit is applicable to all sorts of milling machines,which spindle taper hole is R8.7/16" - 20 UNF internal thread on the top side and pull up into the keyed taper squeezing the end mill to grip itMade of high grade tool steel. Hardened and precision ground13 size collets1/8-inch, 3/16-inch, 1/4-inch, 5/16-inch, 3/8-inch, 7/16-inch, 1/2-inch, 9/16-inch, 5/8-inch,