Item Type: 4.10/3.50?4 Tyre TubeMaterial: RubberApplicable Rim Size: Approx. 4in/10.2cmPLY Rating: 4Tread Depth: Approx. 7mm/0.3inTires Withstand Maximum PSI: 20Application: Fit for 47cc 49cc 2 Stroke Mini Pocket ATV QUAD Bike, for vehicle with 4in rim, such as lawn mowers, hand trucks, wheelbarrows, yard trailers, dollies, trolleys, wagons, snow blowers, pressure washers, air compressors, generators, go carts, wood chippers and more.1Application: Fit for 47cc 49cc 2 Stroke Mini Pocket ATV QUAD Bike, for vehicle with 4in rim, such as lawn mowers, hand trucks, wheelbarrows, yard trailers, dollies, trolleys, wagons, snow blowers, etc. 2Unique Pattern Outer Tire: 7mm tread depth can increase the friction between the tire and the ground, control sliding and increase comfort and stability, also ideal for tire cooling and drainage, greatly improve the vehicle handling performance. 3High Quality Material: The 4.10/3.50?4 Tyre Tube is made of reliable BPA free rubber materials, thick enough to absorb shocks on bumpy road, delivering a better driving experience. 4Higher Driving Safety: The Tire Inner Tube Set with heavy 4 ply rated construction for punctures and abrasions resistant, great for long distance or racing. Also explosion proof to be applied for all seasons, more securer to use. 520 PSI Maximum Inflation: 4.10/3.50?4 tyre and tube can withstand up to 20PSI pressure, support in inflating with manual pump (not included) only to avoid overfilling. Not suitable for road or highway use. 1 x 4.10/3.50-4 Tube 1 x 4.10/3.50-4 Tire