1.304 stainless steel: Our squat rack cable pulley system is made of high-quality 304 stainless steel, which ensures durability and resistance to deformation, you can trust our products to withstand heavy loads and provide long-lasting performance, smooth and silent operation, our gym pulley set is equipped with 88mm aluminum alloy silent pulleys that provide 180 degree rotation, which ensures a smooth and quiet movement during your workout, allowing you to focus on your fitness goals without distraction, multi-functional rack mount design, rotate with our upgrade 180 degree rack-mounted swivel pulleys for smooth and noiseless operation, whether you're creating your own DIY fitness pulley system or enhancing your LAT pulley system, our products provide the flexibility and convenience you need, heavy-duty and reliable, our heavy-duty swivel pulleys are designed for intense workouts, handle tough workouts and stand the test of time, you can count on its strength and stability, making it the perfect addition to your home or commercial gym, easy to install and space-saving, The pulley system is suitable for the installation of 2*2 and 3*3 fitness racks, if you have any suggestions or questions, please contact us in time, your satisfaction is our top priority.