Feature 1、Strong Shock Absorption: Thick, shock absorbing butyl inner tubes provide superior ride performance and higher shock damping, ensuring a safe ride no matter where you are on rough and bumpy roads. 2、Explosion Proof Inner Tubes: These inner tubes are made of thick, shock absorbing butyl rubber, which is elastic, not easily deformed, and has self sealing properties to prevent explosive punctures. 3、2.50/2.75‑10in Tubes: Heavy duty tubes are suitable for off road vehicles with 10in rims and 2.5in to 2.75in tire widths, these universal inner tubes are best for motorcycles with engine displacements of 49cc, 50cc and 70cc. 4、Compatible Brands: These tubes are compatible with factory tires replacement for CRF50 XR50, replacement for Suzuki DRZ70 JR 50, replacement for PW50 TTR50, replacement for Coolster QG‑210 QG‑213A, etc. 5、Direct Replacement: 2pcs dirt bike inner tubes can cirectly replace your motorcycle front and rear inner tires, change the tires in time to prevent any puncture issues that may arise. Item Type: 2.50/2.75‑10in Inner Tube Material: Rubber + Metal Quantity: 2pcs Stem Type: Straight Metal Stem Rim Diameter: For 10in rims and 2.5in to 2.75in tire widths Application: Suitable for offroad vehicles with 10in rims and 2.5in to 2.75in tire widths. These universal inner tubes are best suited for motorcycles with engine displacements of 49cc, 50cc and 70cc. Replacement for CRF50 XR50 Replacement for Suzuki DRZ70 JR 50 Replacement for PW50 TTR50 Replacement for Coolster QG-210 and QG-213A Replacement for Razor MX650 X500 Replacement for Baja Dirt Runner 49 Package List 2 x 2.50/2.75‑10in Inner Tube