Item Type: Foam TubeMaterial: SpongeSize: Length: Approx. 130cm / 51.2in, Inner Diamter: Approx. 0.7cm / 0.28in(The Size is Measured Manually, There May Be Small Deviation)Usage: Avoid Friction Between the Transmission Cable and Brake Cable and the Internal Frame to Produce Abnormal Noise .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1This is a bicycle sponge protection hose that can reduce friction, effectively protect the bicycle and prolong its service life. 2Can avoid the abnormal noise caused by the friction between the transmission cable and the brake cable and the internal frame. 3Made of sponge material, no irritation, no pollution, no harm to the environment, corrosion resistance, acid and alkali resistance. 4Use insulating materials, high elasticity, soft texture, and good antivibration effect, which can increase the life of the bicycle. 5With wide applicability, this foam hose is widely applicable to mountain bikes, land bikes and general bicycles.