The Xcelite TCMB100MTW Two-Wheel Black Polyethylene Service Tool Case, 20 in. x 16 3/4 in. x 13 1/2 in., features extra large, 3 5/8 in. roller bearing wheels that ensure maximum stability and easy transport over rough pavement or stairs. The case is made from super tough, black polyethylene that is rotationally molded for maximum strength and has a minimum wall thickness of 0.120 in.. The extra wide, comfortable extension handle is molded into the case to prevent wear, and it features an easy one-handed release and can lock in place automatically when extended and retracted. The case is also equipped with two convenient tote handles that are spring loaded for protection. The case contains a 3-panel hinged tool pallet in its lid as well as an additional pallet in its bottom half. It can hold more than 50 individual hand tools and over 40 screwdriver/nutdriver blades and handles, with extra space included for storage of additional equipment.