Gold & Platinum Lever Backs Only – No Wire, Sold by the Piece Metal Types:18K White This collet is compatible with

This collet is compatible with any NSK handpiece that accepts CHH series collets

80 mm across 39 graduated holes

Also fits most custom-spec John Frei benches built to use the catch tray and tool tray

Set of five test needles covering five distinct gold karats

making it well-suited for marking rings

Gold & Platinum Lever Backs Only – No Wire, Sold by the Piece Metal Types:18K White This collet is compatible withThese lever backs are the same as our 22B 99MAIN lever backs, but have been cut in half so you can purchase them individually. To order a pair, simply add 2 pieces to your cart. Each lever back includes a ring and no wire, with unset rivets to protect the steel spring during the soldering process. Soldering lever backs with the rivet set destroys the spring tension the unset rivet design makes assembly simple and professional. To assemble: remove the