Speed Dividers organize all types of material from lumber, plywood, metal, tubing, PVC piping, garden tools, ladders, scaffolding, & folding tables. The sky’s the limit! They hold up to 25lbs per pair. Simply cut a 1/8”x 1/2” dado, 1/2" in from the front of your cleat. Then simply slide the divider into place and for a permanent solution, affix with the optional screw holes. The Speed Divider is extremely versatile because you can slide it to fit any size material. There are pre-drilled 1/4” holes to secure material from tipping out with a chain, rope, or bungee cord.