Features： 1、Double Head Design: One head is suitable for central shaft with an outer diameter of 39mm and 16T, suitable for BBR9100. The other head is suitable for the central shaft with an outer diameter of 40.5mm and 16T slots, suitable for BBR60, for MT800 for precise installation and quick disassembly. 2、Full Coverage: Socket teeth of this install remover tool provide full coverage and secure engagement. Ensures stable gripping force even after prolonged use or when facing damaged bottom brackets, preventing slippage for easy and efficient assembly and disassembly. 3、High Accuracy: Precise manufacturing protects the integrity of bottom brackets. Accurate tool sizes prevent any damage to the bottom bracket during assembly and disassembly, preserving the original state of expensive components and extending the lifespan. 4、Effortless Use: Ergonomic design for effortless and enhanced comfort. The bottom bracket tool is designed to maintain an enhanced grip even when applying significant torsion, reducing hand fatigue and ensuring smoother assembly and disassembly processes, ideal for prolonged use. 5、Sturdy Material: The bottom bracket repair tool is made of high strength material with special hardening treatment to resist wear and erosion, ensuring lasting durability and maintaining performance even after extended use, ideal for professional technicians and experienced cycling enthusiasts. Specification： Item Type: Bottom Bracket Install Remover Tool Material: Metal Size: BB39-BB40.5 Package List： 1 x Bottom Bracket Removal Tool