Office Computer Chair Black Plastic 2" Caster Roller Wheel 2pcs Product Name : Caster Wheel;Material : Plastic, Metal Fixing Stem Size : 0.8cm x 1.5cm/ 0.3" x 0.8"(D*H);Wheel Diameter : 5.1cm/ 2" Total Size (Approx.) : 5.5 x 8cm/ 2.2" x 3.1"(D*H);Color : Black Weight : 90g Package Content : 2 x Caster Wheel