Features: brand new and high quality High quality material: Universal are made of high strength and high quality layers, light weight, strong and durable, durable and impact resistant. Reduce noise: Premium pulley has low friction coefficient, low vibration and noise during use, no friction sparks, high safety performance and stable use. Strong practicality: The universal pulley is convenient and flexible to use, and its advantages gradually replace old pulley, and it is the best choice to replace the old pulley in the gym. Easy to install: The durable bearing wheel is very easy to install and use, suitable for most fitness and can bear a weight of about 100kg. Wide applications: Universal used in fitness, cable machines, garage door pulleys, steel ropes and other parts. Specifications: Material: stainless steel Color: black / white Package weight: about 76g Diameter: about 4cm/1.57inch Note: Please allow 1-2cm error due to manual measurement. pls make sure you don't care before bidding. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks! The package contains: 1pc x Bearing roller wheel