General description UNIOR Bottom Bracket Facing Tool is designed for easy restoration or preparation of the bottom bracket shell surface. It features a magnetic handle for effortless assembly and an ergonomic heavy-duty double component handle for enhanced grip and comfort. Technical specifications Type: BSA & ITAL Size: 1.37" x 24 TPI Reamer frame guide BSA: 1699.4BSA Reamer frame guide ITA: 1699.4ITA (optional) Compatibility and accessories Reamer’s magnetic handle: 1695.1/4BI or 1695.1/4BIUS Reamer body: 1699.2/4 Reamer: 1699.1 Reamer frame guide BSA: 1699.4BSA with tool 1699.5/4P