These pulleys are engineered for optimal performance, featuring bearings that ensure a smooth and quiet operation. ideal for barn doors, they add a touch of sophistication to your home. The durable construction withstands heavy use, making them a reliable choice for any sliding door application. Features -Color:Black -Material:Nylon -Size:12.00X12.00X2.00cm/4.72X4.72X0.79in -Robust construction: the thickened design enhances wear resistance, ensuring these wheels are durable and less prone to damage over time -Smooth and quiet: equipped with bearings, these wheels offer a smoother and quieter sliding experience, reducing operational noise -Versatile compatibility: designed to fit various doors and windows, these wheels are easy to install and highly versatile -Efficient sliding: provides stable and efficient sliding, eliminating issues like sticking or jamming, and improving overall functionality -Broad applicability: ideal for barns, warehouses, garages, and other settings, these wheels are ideal for both agricultural and industrial use Package list: 2 x pulley wheel