4 Pairs 0.9" Diameter Single Pulley Furniture Sliding Door Roller Set Product Name : Sliding Door Roller;Material : Metal, Plastic Color : Silver Tone, White, Black;Overall Size : 5.8 x 3.1 x 1.5cm/ 2.3" x 1.2" x 0.6"(L*W*H) Roller Dia.(Approx.) : 23mm / 0.9";Shaft Size : 7 x 8mm/ 0.28" x 0.31"(D*L) Mount Size : 47 x 20mm/ 1.85" x 0.79*"(L*W);Hole Diameter : 4.6mm/ 0.18" Weight : 268g;Package Content : 4 Pairs of Sliding Door Roller Set