Size: 3inch-8inch Color: Black, white, red Material: Rubber, PU Packing: Film, thencarton Model number: EF, M, J Place of origin: Wuxi, China Brand name: Wuxi Framing Hardware Packing: Film, thencarton Capacity: One 4 inch caster wheel 120kg Diameter: 3, 4, 5, 6, 7, 8. Classification: Flat caster: Fixed pulley Universarsal belt brake wheel Universarsal without brake wheel Collected poles caster: Fixed pulley Universarsal belt brake wheel Universarsal without brake wheel.