Wheel Diameter: 10-1/2"Wheel Width: 3-13/64"Hub Length: 2-1/4" To 4"Hub Diameter: 5/8" Or 3/4"Load Rating: 300 lbs.Steel Wheel With BearingsSolid Sawtooth Tread PatternTire Is Made Out Of Solid Polyurethane Foam And Can Never Go Flat4.10/3.50-4Replaces Tire Sizes From 9" To 11": 4.10/3.50-4", 3.50-4", 4.10-4", 10X3", 10X3.50"Comes With Adapters To Accommodate Axel Sizes Of 5/8" And 3/4" From 2-1/4" To 4"