RTS overflow Catch Can canisters eliminate the safety concerns and messy cleanup associated with high-rpm transmission fluid blowby. These overflow canisters feature lightweight aluminum construction, a durable powdercoated finish in Black or RTS Red. Their compact size provides ample ground and header clearance for drag cars, plus their Quick Disconect hose line offers reduced weight and race durability. Draining the overflow canisters is easy with their 1/8 in. drain petcock.