Organize your bulky parallel clamps once and for all. This specially designed rack holds all brands of parallel clamps - up to 12 in all - for easy and convenient storage. Pre-drilled holes are 16" on center for simple mounting to wall studs. Slotted holes are for attachment to the Pack Rack (#21834, sold separately). Simply drill corresponding holes in the Pack Rack to attach the Parallel Clamp Rack to store parallel clamps up to 50" in length. Durable galvanized steel construction. 24" long.