AKRO-MILS Stack and Nest Tote Boxes stack when full, turn 180Â° and nest when empty. High-density, injection-molded polyethylene—resistant to solvents and chemicals; wonâ?TMt rust, corrode, crack or bend. Cleans easily. Ridges under lip prevent jamming. Order totes and lids in quantities specified, priced each. Lids and label holders sold separately.