These are 3D printed rack mount barbell horizontal mounts for your home gym. Can hold 2" axles and smaller barbells easily. Several color options are available, Pictured is my 45LB power bar in it. Printed in HIPS filament to stand up to the heat and abuse. These are sand-able and easily painted if you want to custom match to your gym. Three versions are available a standard for most barbells,mm for the larger barbells. and an axle for 2" equipment. If you have any questions let me know. These mount to the power rack squat rack with one 5/8" bolt per hook (hardware not included in this listing), Can be used with my 1" to 5/8" adapters if you need to go between the two sizes.