Our automotive boltless storage shelving is great for any automotive parts. We offer muffler storage with 5 levels in both starter and adder units. Hanging tailpipe storage is available in a starter unit only. Automotive storage units are easy and fast to assemble without needing any loose fasteners. Automotive storage shelving units have rivets which attach to all left-to-right and front-to-back beams and align with keyhole slots in the vertical posts. Tap into place until the units are tightly assembled.