Description Treaded Wheels, 2″ (2) Key Features     1/8″ (3mm) axle diameter can be drilled out to 5/32″ (4mm)     Fits inside most wheel pans and retracts     .750″ width (19mm)     Low bounce, shock absorbing Overview 200T takes a 1/8 Axle (3mm). 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.