Octura Left Rotation Flex Cable in a 20-foot length. This should be used with propellers turning in the same rotation as in picture two. Using this in the wrong direction will damage it. There are 2 different 187 cable types. - The black 187 cable is more flexible than the gold cable, but the gold cable will be easier to solder. Specifications: Length: 20 feet Diameter Options: .098L (2.48mm) Flex Cable .130L (3.30mm) Flex Cable .150L (3.81mm) Flex Cable .187L (4.75mm) Black Flex Cable.187L (4.75mm) Gold Flex Cable Requires: Prop Shaft, Drive Dogs, and nuts to complete. NOTE: There will be some slight differences in cable colors. Picture two is for example and not included. Click here to learn how to make cables yourself to save some money!