Vòng Bảo Vệ Đĩa Xích Xe Đạp BCD 130mm 54T

Description: Made of aluminum alloy, CNC machined process and anodic oxidation electroplating, with the trait of smooth surface, bright color, not faded and corrosion resistance. Elliptical Design: Eliminate trampling dead point, enlarge force distance for the best starting point, solve chain skipping problem, save more effort and increase speed, without any hindrance or noise. Knee protection: The chain ring can distribute trampling power more reasonably so that protect knee meniscus more effectively and reduce knee wear during climbing race and long-distance riding. Speed: 54T BCD: 130mm Specification: Diameter Size: 225mm/8.89inch Package Includes: 1 Piece Bike Chainrings Guard Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!