The RBK-6 is an toolbelt mounted refillable, mini nitrogen or CO2, drain cleaning kit. Featuring a 20 ounce cylinder that can be refilled right at your service truck. The cylinder includes an integral mounted regulator for quick and easy adjustment of discharge pressure. Get exactly the amount of pressure you need with a quick adjustment on the regulator. Furnished complete with an 9' coiled hose and drain gun kit with a variety of nozzles. Also included are Adaptors so you can refill the portable gas cylinder at the service truck. Made in the USA.