The Jacobs BT 30 Ground Thread Pull Stud has a 90-Degree angle and is 43-mm in length. This Jacobs BT 30 Ground Thread Pull Stud is precision ground and manufactured to the best quality for maximum safety and longer life. Like all Jacobs chuck's products, this Jacobs BT 30 Ground Thread Pull Stud comes with a one year factory warranty Please note pull studs vary in shapes and sizes. Different machining center manufacturers use different stud configurations on their models. Choosing the correct pull stud is critical for safe operation of the machine tool. Jacobs is not responsible for any damage, or injury as a result of using the wrong pull stud 
AllJacobs Chuck Tool Holders are new and factory sealed.  Each tool ships in the reusable protective tool holder capsule for storing when not in use.