Vice clamp to mount your Gullsweep to railings. Two sizes are available, this Rail Mount fits up to 1-5/8” diameter (also available as a smaller clamp GS-SRM which fits up to 1” diameter – see below). It takes seconds to put in place and seconds to remove, then store when your boat is running. Simply place the vice clamp over railing & tighten so it is vertical to the rail. We advise putting tape around rail before mounting to indicate where rail mount should be placed, and also to protect the rail. Adjust center support pin to be vertical to the water & tighten adjustment nut. Place your Gullsweep on the support pin and adjust, if not level. If clamp is left on rail, remove center pin to avoid injury! The centre swivel pin is not included with the rail mount as it utilizes the standard pin that comes with a Gullsweep (GS-1 & GS-2). Postage for this item is £3.50 UK only.