SXB5B130A-ED2WR(23GA42)42*170

Chain ring: high strength aviation aluminum alloyCrank: high strength aluminum alloy  Chain Cover: aviation aluminum alloy   The chainring and aluminum chaincover are secured to the crank arm's pawl with screws and nuts, allowing for disassembly   Chainring: This chainring is made using a combination of stamping, heat treatment, and CNC machining. The surface is treated with a sandblasted anodized finish for enhanced durability,  Crank Arm: The crank arms are produced through precision forging, heat treatment, and CNC machining. They feature a sandblasted anodized finish, ensuring both strength and resistance to wear.  chain Cover: The chain cover are produced through precision forging, heat treatment, and CNC machining. They feature a sandblasted anodized finish, ensuring both strength and resistance to wear.    This combination of processes guarantees a lightweight yet robust design, perfect for high-performance cycling.