63.5mm (2.5") x 24mm Smooth Low Bounce PVC Wheels for 4mm Axle (2 pack) from Du-Bro - DUB250R
Takes a 5\/32 Axle (4mm). Du-Bro's low bounce captive air wheels have flown on more airplanes over the years than any other wheels on the market! The wall thickness is consistent throughout the wheel giving you a balanced tire. Comes complete with a sporty nylon metallic hub. Works well on grass & paved runways.
Features:
\nSporty nylon metallic hub
2 per package
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  WARNING: This product can expose you to Diisononyl phthalate (DINP), which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.