All trays are made of high density polyethylene. They will not rust or corrode and acids, harsh chemicals and oils will not harm them. Glue will not stick to them and they will withstand temperatures from 250°F to minus 40°F. These trays are great truck organizers and have incredible industrial strength reinforced handles. Made in the U.S.A
T1000: Tray can be divided into compartments as small as 4.5″x 1.5″. Tray comes with six dividers. Extra dividers are available at extra cost.