This premium Fluid Tank is constructed of 100% thick, and rugged Roto-Molded Polyethylene. Simply attach this Otter Accessory to your Otter Rear ATV Box for the simplest way to carry 5 Gallon Buckets with you during transport. With no tools necessary for installation, you simply need to slide this tank on the to the built in accessory attachment points on your Otter Rear ATV Box.