24" Wheelchair Inner Tubes 25-540 Rubber Schrader Valve

These are high-quality thick Kenda inner tubes.  These inner tubes have a Schrader valve stem (standard wheelchair valve stem size) that is threaded all the way down to the tube. That can make it easier to inflate the first time.  When you install the first time, remove stem nut, lightly fill before inserting in the tire, then run valve stem through the rim and use the nut to secure.  Once the tire is on all the way, the value stem is easily accessed because it is screwed into place, no fishing around trying to push it to pump. Kenda Part Number: TR4A Tire Diameter Tire Width  Metric Tire # Valve Type Thron Proof 20" 1.25" - 1.5" 28-451  to 37-451 Schrader   22" 1.25 - 1.75   28-501  to 47-501 Schrader   24" 1" 23-540  Schrader   24" 1.25"-1.75" 28-540 to 47-540 Schrader Yes 25" 1" - 1.25" 23-559 to 28-559 Schrader   26" 1"- 1.25" 23-590 to 28-590 Schrader   27" 1" - 1.25" 28-622 to 32-622 Schrader Yes