The kit box is made of durable polypropylene. Features include a stronger hinge for longer life, double latch for sure, even closing and stronger rounded corners to prevent breakage. They are designed for easy, positive closing and strength. A full set of cleaning instructions are mounted on back of case. Includes: No. 9 Solvent, Lubricating oil, Patches, Shotgun Rod, Slotted end, Accessory adapter and brush.