The RACKS360 mounting system rotates 360 degrees to allow tools of many shapes and sizes to be attached securely no matter your rollbars angle or configuration. This allows you to keep your tools with you wherever you go so you can multi-task efficiently. FITS: Round, Square and Rectangular roll bars Hardware and basic installation tools included Maximum Weight Limits: Top Racks weight limit = 20lbs Bottom Racks weight limit = 20lbs Fits the following Rollbar sizes: 2” round & up to 2 1/2" round 2” square 1.5 x 3 (Mounts on 3” side of roll bar) 2" x 3 (Mounts on 3” side of roll bar)