Thorn Proof Wheelchair Tube - 24" x 1 3/8" (37-540)

This replacement air filled wheelchair inner tube is designed to fit all 24 x 1 3/8 inch (37-540) rims and is great for everyday use. The thicker tube wall (3.6 mm) is significantly thicker than a standard air tube. That difference helps prevent thorns or sharp debris from puncturing and causing a flat tires.

Schrader (straight) style valve.