Uxcell Furniture Twin Wheel 360-Degree Rotation Swivel Brake Caster, 1.5" Product Name : caster wheel; Type : rotatable, dual wheel, square top plate; material : nylon, metal Color : black, Silver tone; screw hole distance(approx.) : 2.5cm/1" (Centre to Centre) Hole Dia (each) : 4mm/0.16";wheel size : 40 x 1.2mm/1.5" x 0.47 inch (d*t) Top plate size : 3.4X 3.4X 0.1cm/1.3" x 1.3 inch x 0.04"(L*w*t);overall size : 6 x 5.5 x 4cm/2.4" x 2 inch x 1.6"(L*w*h) Weight : 57G;Package Content : 1 x caster wheel