1、Hot Quenching and Hardening Treatment: Adopt hot quenching and hardening treatment, high wear resistance, can bear high tread force, the chain speed is flexible, fast, no chain disconnection, and no noise. 2、Waist Guide Angle Design: The waist adopts the guide angle design, the gear tip and the chain piece can quickly bite, do not have to worry about the car in the violent impact of the chain, stability and safety greatly improved. 3、Full Electroplating Treatment: High quality steel with full electroplating treatment and strong chain axle chimerism, can withstand strong of chain and tensile and torsional strength, sediment is easier to eliminate, effectively reduce damage. 4、Double X Bridge Design: Double X bridge design, make the upper and lower chain smoother, the same bridge and chamfer design on both sides of the chain plate eliminates the installation of directional problems, increase installation convenience. 5、Strong Tensile Force: The strong tensile force of rounded rivet in the corner enhances the joint force of the axle, which can get more than 350KGF, and the chain is safe and stable. At the same time, the unique chamfer design can quickly change the speed. 6、Hollow Lightweight Minuteness Design: Hollow lightweight minuteness design of the inner and outer chain piece shaft, in the same strength can reduce weight, light collocation is the choice of long term journey. 7、Colorful Electroplating: Colorful electroplating, anti pollution, anti corrosion, anti rust and anti fade, effectively reduce the number of maintenance, making riding more convenient. Item Type: 9 Speed Mountain Bike Chain Weight: Approx.300g / 10.6oz Material: Carbon Steel 1 x Chain 2 x Hook And Loop Buckle