This inner tube is made of isobutylene isoprene rubber, which is better in airtightness, elastic damping and aging resistance than natural rubber. NOT recapHeavy duty inner tube with TR87 bent valve stem, max inflation is 30 PSI. Inflate with hand pump only4.10 3.50-4 inch inner tube works with hand carts, carts, garden cart, garden cart, lawn cart, utility cart , flat carts, lawn mowers, small tractors, wheelbarrows, garden trailers, cart carts, wagons, generators, snow blowers and most 410 / 350-4Perfect fit for 4.10 / 3.50-4 inch TIRES / WHEELS: Replacement tubes for 4.10 / 3.50-4 tires / wheels (10 inch outer diameter). also measured in 4.10 3.50-4, 410/350-4, 3.5-4 4, 4.1/3.5 4, 4.10 3.50 4, 4.10 3.50-4 , 4.10/3.50-4, 4.10/3.50-4 inch, 4.10x3.50 -4 inchCUSTOMER SATISFACTION: Before installation, check if the inner tubes are completely sealed in the plon Feature: Inflatable Valve: Angled rod TR87 Ply Rate: 4 Max Inflation: 30 PSI Compatibility Baja Motorsports Dune (DN65) Go-Kart Bladez Comp / Bladez Cruz& 39;r / Bladez S Bladez XTR-HD 550 / Bladez XTR-S 450 / Bladez XTR- 450 / Bladez XTR-S Transport 450 / Bladez Comp 2 / Bladez Comp 450 / Bladez Street 2 / Bladez Street 450 Carter Turbo Tiger 2403 EVO Evo2 / EVO Evo2X / EVO EvoL2X / EVO EvoSPX Assault / Assault Pro Hoveround Teknique FWD Manco Bandit 104B Mongoose Dirt Grinder PaceSaver Scout Boss 5 / PaceSaver Scout Boss 6 / PaceSaver Scout RF-P3 and RF-P4 Super Sup er Turbo 1000 Elite / Super Turbo 800 Elite Scoot 2X (49X) Venom BMX / Venom PRO Yerf-Dog 1204 / Yerf-Dog 3101 / Yerf-Dog 3208 color: black Material: rubber size: 260x85cm Measurement: 4.10 / 3.50 -4 inch Package Contents: 2 * inner tubes Only the above package, other products are not not included. Note: Light shooting and different monitors may cause the color of the item in the picture a little different from the real thing. The allowable measurement error is +/- 1-3 cm.