Description: 【Quality material】: This gym pulley block is made of quality plastic and metal materials, which are sturdy; wear resistant, and not easy to deform. It can be used repeatedly for a long time 【Easy to install】: This fixed pulley wheel can be easily installed on the fitness equipment rack. It Is Easy to install and the pulley runs smoothly 【Flexible use】: This rack mounted swivel pulley features a rotatable design that allows you to adjust according to different fitness methods, making it a great accessory for your workout routine 【Appropriate size】: The square tube hole diameter of this DIY fitness pulley is 25 mm; the square tube thickness is between 50 mm and 80 mm. Its compact structure and lightweight design save space 【Wide application】: These strength training attachments are nice for cable machines, home workouts, strength training, and other scenarios Specification: Material: Plastic and Metal Size Chart: Square Tube Hole Diameter 2.5cm/0.98inch Square Tube Thickness 5cm-8cm/1.97inch-3.15inch Package Includes: 1 Set of Gym Pulley Block Note: Please allow slightly errors 1-2cm differences due to manual measurement.