Model Number: SF9RUC-W4M3A225OS34 Brand Name: Carefree Tire Key Specifications/Special Features: Pros: beautiful wear, corrosion resistance, impact resistance, large capacity, flexible rotation, muteDifferent dimension, color and tread are optional.Much lighter than traditional rubber wheel.Eliminate costly repair or replacement of tires and tubes.Strengthening drum wheel, solid deformation, anti-skid tread, thick PU material, super wear-resistant, does not crackJiaxing Carefree Caster offers a full range of Flat Free tires, pneumatic tires, and casters ranging from lawn & garden equipment, industrial material handling equipment, medical mobility equipment, scooters. Golf carts, bicycles, and baby strollersMuch lighter than traditional rubber wheel.Pros: beautiful wear, corrosion resistance, impact resistance, large capacity, flexible rotation, muteLong lasting based on high standard material.Pros: beautiful wear, corrosion resistance, impact resistance, large capacity, flexible rotation, mute Wheel type Foam Filled Wheel size 280/250-4 Wheel diameter 9.06"(230.1mm) Wheel width 2.83"(71.88mm) Wheel color Grey, black, red, blue, green, yellow and more Tread turf Hub length 2.25” offset Bearing size 1/2”, 5/8”, 3/4”PBB/CBB/MB Rim size 4 Item No. SF9RUC-W4M3A225OS34