Bottom Bracket, T47 Thread Bea with Double Silicone Sealing , Aluminum Alloy for 86 92mm Frame, Outer Diameter 47mm Inner Diameter 3

Aluminum Alloy: The aluminum alloy bottom bracket is made of aluminum alloy material, which is sturdy and . Silicone Sealing : A double silicone sealing is installed at the port at the bottom of the bracket.

Service Life: Prevent pollution, pro service life, and easy to install, alloy material, and service life. Item Type: Bottom Bracket Material: Aluminum Alloy Outer Diameter: Approx. 47mm Celsius 1.85in Inner Diameter: Approx. 30mm Celsius 1.18in Five Way: Built in Approx. 86Celsius92mm