Luggage Case 1" Round Rotatable Swivel Wheel Caster 4pcs Product Name : Caster Wheel;Material : Polyurethane, Metal Color : White, Silver Tone;Mounting Hole Dia : 4mm/ 0.16" Mounting Center Distance : 30 x 25mm/ 1.2" x 1" (L*W);Wheel Diameter : 25mm / 1" Overall Size : 45 x 33 x 40mm / 1.8" x 1.3" x 1.6"(L*W*T);Weight : 144g Package Content : 4pcs x Swival Caster Wheel