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Bearing Collet Nut holds all ER40 collets. Our ER40-UM Wrench works on this collet nut. Internal cam removes collet when unscrewed. This nut is a bearing nut and has internal ball bearings. Precision ground ID thread and taper.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.