1The brake cable is constructed by spiral high carbon steel, anti-rust, pliable, durable, provides excellent braking force for safe riding. 2The outer housing is made of quality PVC, resistant to heat and coldness, anti-tear, anti-aging, colorfast and durable. 3The housing cap is made of quality materials, sturdy and fits cables perfectly, can protect the cables from bifurcating. 4Upgraded materials and technology, more lightweight and good quality. 5Perfect accessory for road bike, mountain bike, etc.