One stainless steel shoulder bolt with 1-1/4” flange 7/8″ hex .590″diameter stem and 8 x 1.25mm threads, 2.100″ overall length and center bushing. Fits machines compound and threaded stud in pics and Shars AXA 100 style quick change tool post with a .594″ hole diameter see pics. Jet lathe and quick change tool post are not included. These are a non stocking made to order item 3-5 business days. Please e-mail with any questions.