Vice clamp to secure your Gullsweep to railings. Takes seconds to put in place and seconds to remove, then store when your boat is running. Place 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, adjust, if not level. If clamp is left on rail, remove center pin to avoid injury! The Small Rail Mount fits up to 1″ dia. Center swivel pin is not included with the rail mount as it utilizes the standard pin that comes with a Gullsweep (GS-1 & GS-2). Also available as a larger clamp GS-RM which fits up to 1-5/8” dia. (see above). Postage for this item is £3.50 UK only.