On Sidewinder masts, we see most boats using the Sidewinder spreader brackets with the Selden spreaders. The spreader kit is complete with inboard angle adjuster fittings and adjustable outboard ends. We stock all parts for the Selden Snipe mast too.
These are the Selden adjustable spreaders. Both the inboard and outboard ends adjust. Sold in a pair. Will fit Snipe.