This is the .150" Flex Drive Cable for the Lucas Oil 4S Catamaran from AquaCraft.FEATURES: Steel construction flexible cable with integrated .187" (4.7mm) drive shaftINCLUDES: .150" (3.8mm) diameter Flex Drive CableSPECS: Length: 15.1" (385mm) Cable Diameter: .150" (3.8mm) Driveshaft Diameter: .187" (4.7mm) jxs 03/07/13 ir/jxs