Features: Non adhesive tire patches can quickly repair bicycles tires, making it convenient and quick to solve unexpected situations. Made from foam material, durable and reliable. Small in size and light in weight, and can be easily put into a pocket or bag. Easy Operation: First let out all the air in the tire. Then use a tire lever to remove the inner tube. Find the pierced hole and use a metal file, to clean the Internal tire surface. Finally use the Self adhesive bike tire Patches to aligns the pierced hole and attach it. Suitable road bikes, mountain bikes, cross-country bikes and so on. Bicycles inner tire Patches repair suitable for inflatable rubber, wheelchair inner tube, trolleys, motorcycles, etc. Simple and practical. When you needs it, you can get the tools immediately, remove the inner tube more quickly and assist in the repair. Specifications: Material: Foam Diameter: Approx. 2.9cm/1.14inch Package Includes: 30pcs Bike Tire Puncture Patches note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.