uxcell 2pcs Red Round Bearing Wheel Caster 4.5" Dia for Traveling Carts Product Name : Caster Wheel;Material : Hand Plastic, Metal Color : Red, Silver Tone;Wheel Diameter : 11.5cm / 4.5" Bearing Inner Hole : 10mm/ 0.4";Overall Size : 11.5 x 3cm/ 4.5" x 1.2" (D*H) Weight : 390g Package Content : 2 x Caster Wheel