Wheel diameter: 4"
Tread width: 2"
Hub length: 2-3/16"
Bearing ID: 1-3/16"
Bore: 1-3/16"
Load capacity: 800 lbs
Bearings: Roller or precision 
Durometer: 85 Shore D (±5)
Temperature range: -40° F to +475° F continuously, 525° F intermittently
Construction: Specially formulated nylon/glass wheel designed to take higher temperaturesHighly resistant to water, cooking oils, fats, petroleum-based products, cleaning solutions, solvents and most acids