The standard inline jaw is the jaw that comes with every Norvise we sell. Be it for a spare, demoing purposes or to upgrade to the new cam lock locking system, a spare set of jaws is never a bad idea (especially if you travel a lot). The customers have spoke and Norvise listened so starting again in 2018 Norvise is putting the Standard Inline jaws back in the line up as a purchase item.Please Note;this jaw has an outside diameter of 3/8 (.375) diameter. They may not be compatible with the older Norvise models with the older magnum hubs. Please call or email if you have questions.