Description:The kit is made from high-quality materials and designed to provide a reliable and easy-to-use solution for converting your bike's hub. It is compatible with a variety of bike models and sizes, making it a versatile tool for any cyclist. The conversion kit is a must-have for anyone looking to improve their bike's performance and versatility. MUQZI Center Lock AdapterFeatures:If Your Hub Is a Center Lock Hub And You Want To Install a 6-Pin Disc, You Can Use This Adapter To Convert It, Compatible With 9/12/15/20 Mm Thru-Axle Hubs. Features:Made Of High-Quality Aluminum Alloy Material + Stainless Steel Gasket. It Is Wear-Resistant And Durable So You Can Use It With ConfidenceProduct information:Material: Aluminum Alloy + Stainless Steel GasketSize: 54mm*Center Distance 44mmApplicable: 44Mm Hole Pitch Six RotorsType 1 Is Suitable For Wrench Tightening, Type 2 Is Suitable For Cassette wrench Tightening, Type 2 Is Not Suitable For Hubs Larger Than 20. 4mm Thru-Axle Cap, Type 1 Has No Restrictions