TOOGOO(R) 2 Pcs 25mm Diameter Wheel Fixed Type Flat Plate Rigid Roller Caster Product Name : Caster Wheel;Type : Fixed Type Wheel Size : 25 x 13mm/ 1'' x 0.5''(D*T);Plate Size : 36 x 2mm/ 1.4'' x 0.8''(L*W) Total Height : 35mm/ 1.37'';Install Hole Dia. : 4mm/ 0.16'' Material : Polypropylen, Metal;Color : Off White, Silver Tone