24″ x 1″ (25-540) Shox® G1 Polyurethane Wheelchair Tire With Herringbone TreadMid-Profile design with all around herringbone tread for a firm, comfortable ride and traction in slippery conditionsEquivalent to 110 PSI on a pneumatic tireFits most 24″ x 1″ and 24″ x 1 3/8″ (540 mm) wheels that have a VALE HOLE for an inner tube valve stem. Check your wheel to make sure there is a hole for inner tube. If NO VALVE HOLE on wheel, this tire will NOT fit.Ultra quad beads help prevent roll-offsNon-marking polyurethane material keeps floors cleanLatex freePrice is for 2 TiresPlease read the fitment and installation notes (shown below) prior to purchase!Shox® Wheelchair Tire Fitment Notes If your existing tire is a 24 x 1 inch with a pyramid shape (angled sides with a flat top) on a composite wheelchair wheel (plastic) on a basic wheelchair from Invacare, Drive, Medline, Guardian, Everest & Jennings, Breezy, or any other brand where there is no hole for an inner tube valve stem on the wheel, this tire WILL NOT FIT. You can purchase a tire designed for most of these wheelchairs on this page. This tire will fit most 24″ (540mm) wheelchair rims. You’ll know you have a 540 mm rim if the existing tire size is 24″ x 1” (23-540 mm), 24″ x 1” (25-540 mm), 24″ x 1 1/4” (32-540 mm), 24 x 1 3/8” (37-540 mm). You can confirm the size by looking at the size stamped on your existing tire. In most cases your rim will also have a hole for an inner tube valve stem (meaning the rim is of a standard size). This tire will replace most tires used on Quickie, Top End (Invacare), TiLite, or any other wheelchair where the rim has a hole for a valve stem. It will also fit most rims including rims from Spinergy, Primo, and X-Core that have a hole for an inner tube valve stem. Shox DistributionCustom mix of elastomers allows impacts to resonate throughout the tire, yielding superior shock absorptionUltra Quad Bead SystemPatented bead system locks tires to the rim helping to prevent roll-offsSpin Cast ProcessExclusive spin cast process produces tires with dense tread and soft pliable sidewallsreducing roll effort while cushioning the ride NOTE: Urethane tires are not able to be put on to a rim by hand. To put the tire onto a rim, you will need our M040E tire tool found HERE in EBAY. If you feel you are unable to do it yourself then your best option would be to take the tires and rims to a local bike shop to put them on for you.