Boloest Bike Bottom Bracket 122.5mm Square Cartridge Taper Hole Axle Bike Parts Spindle Crank for Mountain Road Racing Bike（With Wrench and Screws）

• 1.【Sturdy and Durable】: The material of bike square bottom bracket is made of high hardness steel. Strong,durable and has excellent compatibility and load-bearing capacity.
• 2.【Wide Application】: Square taper bottom bracket with matte black surface, suitable for 68mm frame shell of mountain bike, road bike,etc.
• 3.【Integrally-Formed 】: The bottom bracket system with Integrated design,make the bottom bracket rotate smoothly and stably and quietly. Waterproof screws can prevent the bracket from being corroded by dirt, mud, and water.
• 4.【Tips】: Please check your old bottom bracket or inquire with your frame manufacturer about the length of the right bottom bracket. Please use the BB tool to install the bottom bracket for safety.
• 5,【Easy to install 】The bicycle bottom bracket is easy to install and remove.

Description: 1, Made of high strength steel, durable, waterproof, matte black surface, solid enough to serve for a long time. 2, Suitable for 68mm frame shell.Please check your old bottom bracket size carefully. 3, Integrated structure: No abnormal noise, with no gaps to prevent the assembly stuck, allows you to focus more on enjoying the fun of cycling. Package Included: 1pcs bottom bracket 2pcs waterproof screws 1pcs hex wrench