uxcell Top Plate 1.5" Double Wheel Rotatable Caster Black 4pcs(2 no Brake + 2 Brake) 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" (D*T) Top Plate Size : 3.4x 3.4x 0.1cm / 1.3" x 1.3" x 0.04"(L*W*T);Overall Size : Swivel: 5.5x 5x 4cm / 2.2" x 2" x 1.6"(L*W*H)Brake: 6x 5.5 x 4cm / 2.4" x 2.2" x 1.6"(L*W*H) Weight : 212g;Package Content : 2 x Swivel Caster Wheel2 x Brake Caster Wheel