Park Tool BBP-AOS Bottom Bracket Bearing Press Set Description: The Park Tool BBP-AOS Bottom Bracket Bearing Press Set works in conjunction with the BBP-1.2 Bottom Bracket Bearing Press Kit to extract press-fit bottom bracket bearings, cups, and adapters. The BBP-AOS utilizes an expanding collet and extractor cup system to safely remove bearings without requiring impact. Includes eight installation drifts for pressing bearings into pre-install cups. Note: The BBP-AOS requires the BBP-1 or BBP-1.2 Bottom Bracket Bearing Press Set for use. Features: Add on bearing extractor kit that further extends the versatility of the BBP-1.2 Bearing Press Kit Safely and precisely removes bearing without damaging the bottom bracket shell Eight precision-machined extractor cups and five hardened collets Compatible with most bearing IDs and bearing/cup ODs Organized in a convenient storage case