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Information from Maritool web site MariTool Part# is BT30-ER20-60M. View BT30 Pull Studs. Taper: BT30. Collet Chuck accepts all ER20 collets. ER20 Mini Nut has an id thread of 24mm X 1.0 pitch. Collet nut is included.
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.