uxcell Metal Axles Window Pulley Door Sliding Two Rollers Wheel 16mm Product Name : Window Pulley;Material : Metal Color : Silver Tone;Hole Sapcing : 55mm/ 2.2" Hole Dia. : 4mm/ 0.16";Roller Size (Each) : 13 x 8mm/ 0.51" x 0.31"(D*T) Total Size : 68 x 16 x 15mm/ 2.7" x 0.64" x 0.59"(L*W*T);Weight : 59g Package Content : 1 x Window Pulley