The BRT-016 is designed to work in conjunction with the BRT-002 30mm ID bearing service tool. This set includes 3 replacement pieces to install and remove 29 and 30mm bearings. The 3 additional parts include a revised steel split collet that is compatible with both 29 and 30mm ID bearings, a new double-sided pilot to locate on all bottom bracket shells/29-30mm bearings and a new bearing extraction cup. This is an essential add-on for any BRT-002 tool.