VOLOHAS 8 1/2 x 2 Thickened Tube for Xiaomi Mi 3/M365/Pro/Pro2/1S/Essential/Soflow so3/so4 Pro Electric Scooter 8.5 Inch Double Thickness Inner Curved Mouth Rear Tyre Replacement Wheels (Pack of

50/75-6.1 Inner tubes for rear wheels: the tubes are compatible for Xiaomi Mi 3/1S/Essential/M365/Pro/Pro2/soflow so3/soflow so3 gen 2/soflow so4 pro/soflow so4 pro gen 2 electric scooter wheels. Reinforced room, which are of high quality. Compared to solid rubber tyres, they have a good cushioning effect and are easier to install. They are double the thickness and are more durable. Valves are better and can hold more pressure. They are made of butyl rubber, have good resistance to penetration, mineral acids and ageing. They also have good resistance to extreme temperatures (-60 °C to 180 °C). Package included:2 x Hoses (Before installation, check whether the internal valves are fully sealed by placing them in the water). If there are bubbles, they are already damaged. Please check the position of the valve and make sure it is installed in the correct direction. Do not mount the tyre with the help of a pointed stick or crowbar. Do not inflate the hoses too much without the tyre cover.)