Profile: Propco Marine Propellers, Inc is a manufacturer of marine and boat propellers. The Propco Aluminum Quad-R-Jet have reduced torque on the steering and the need for jackplates, and lower RPM AND GREATER SPEED. We also have the PROPCO CUSHION HUB, which is built-in-shock-absorbing cushions in the hub to prevent breakage. We also have Reverse Hook Cup Propeller, "RHC" technology to use on houseboats, workboats and barges. The Quad-R-Jet is made of lightweight aluminum, which will not cause unnecessary wear on your engine's drive train. We have authorized repair shops throughout the USA.