uxcell White Nylon 16mm Dia Single Wheel Sliding Roller Window Pulley Product Name : Window Pulley;Material : Metal, Plastic Color : Silver Tone, White;Hole Diameter : 3mm / 0.12" Hole Sapcing : 45mm/ 1.8";Roller Size : 16 x 5mm/ 0.64" x 0.2"(D*T) Total Size : 55 x 8 x 18mm / 2.2" x 0.3" x 0.7" (L*W*H);Net Weight : 11g Package Content : 1 x Window Pulley