General description Sliding Door Double Shaft Hanging Retainer Pulley Rail Guide Locator is designed to provide effective guidance for wooden or sliding doors. It helps in locating the door and preventing it from coming out of the guide. Technical specifications Material: Metal Main Color: Silver Dimensions: 30 x 33 x 13.5 mm Thickness: 2 mm Hole Center Distance: 20 mm Head Diameter: 12 mm (0.47 inches) Features two bearings for smooth rotation Package content 4 pcs x Sliding Door Guide Locator