.top{margin-bottom:30px;}.top li{margin-left:5%;margin-right:5%;margin-top:10px;line-height:120%;list-style-position:outside;}Wolf Tooth 40mm 1 1/2 Crown Race Installation Adaptor. This adapter tool alows for installation of the crown race without damaging seals. It is compatible with the Park Tool CRS-15.2 crown race setting tube. Internal o-ring retains this adapter on the setting tube during use and storage. CNC machined from aircraft grade aluminum billet.Fits Park Tool CRS-15.2 crown race setting tube Design and manufactured in Minneapolis MN USA Material - aircraft grade aluminum