Forespar's Line Control Whisker poles are designed for boats in the approximately 25' to 55' range. The system is simple and makes the extension and retraction of poles quick and easy; the entire operation can be executed while positioned at the mast. You no longer need to go forward to adjust buttons of any kind. Simply uncleat the line to extend or retract (never attempt to adjust while under load). Topping lift attachment points are on all poles. Attachment to outer end is with jaw end fitting facing down.