Pedros Pro BB Socket System Insert BB Adapter Tool Black 12-Notch 52mm 6460765 T47Socket inserts for use with the Pedro`s Pro Socket Cup. As new bottom bracket standards emerge additional inserts can be easily introduced enabling mechanics to expand their toolkit affordably and efficiently. Inserts are placed into the Pro Socket Cup and are held in place magnetically with a satisfying click TECH SPECS Vendor Pedros Manufacture Number 6460765 Model Name Pro BB Socket System Insert Category Tools