Clean up those sloppy spreaders on your old mast by installing a Thru Bar Spreader Bracket Kit. Includes the thru bar, port and starboard plates that mount to the outside of the mast, 16 stainless steel rivets and instructions. Kit reuses the mounting holes from your old bracket. All it takes is a little drilling and pop riveting (maybe a bit of persuasion with a rubber mallet). Thru Bar is also available separately.