Built to fit on 2011+ Polaris snowmobiles with the T-Slot tunnels (12-5/8" spacing), or use as a universal mount on a 4-wheeler, tractor, flatbed, etc.
Made of 1/8" thick 5052 aluminum CNC cut and bent, optional powdercoat. The alternatives are often a lot thinner and wont hold the boxes as secure. Additional slots cut on sides for connecting bunge cords or webbing straps if you want to tie more cargo down on top. Boxes not included.