Wheel diameter: 4"
Tread width: 2"
Bore: 3/8"
Durometer: 95 Shore D (-/-5)
Temperature Range: -40F to +475F continuously, 525F intermittent
Construction: Compression molded high temperature epoxy resin thermoset material. Easy rolling integrated ball bearing locked in hub. High temp grease injected in bearing, no maintenance required. Superior high temp performance, unmatched by phenolic or fiberglass