uxcell Plastic Hooded Casters Wheel for Chair 48mm Dia. 2 Pcs Black Product Name : Chair Casters;Suitable for : Office Chair, Mobile File Cabinet,etc. Material : Plastic and Metal;Main Color : Black Casters Diameter : 48mm/1.9";Total Size : 69 x 52 x 84mm/2.7" x 2" x 3.3"(L*W*H) Stem Size : 11 x 22mm/0.4" x 0.87"(Max.D*L);Weight : 200g Package Content : 2 x Chair Casters