Fit: Crossbars/Handlebars with a Diameter of 1 cm Material：High-Density Foam Length: about 20 cm (7.9") Outer Diameter: about 5.3 cm (2.08") Inner Diameter : about 10 mm (0.39") These Professional Crossbar Protectors are a soft lightweight accessory used to protect and decorate the handlebars of your bike, ATV, or motorcycle. The protectors are all made of high-density foam, making them extremely durable to physical contact while riding.