This kit is typically used to retrofit a Catalina 27 or Catalina 30 equipped with a mid-boom traveler whose traveler car has a single attachment point for the mainsheet. block.

If you require a retrofit kit for use with a new traveler car equipped with three mainsheet attachment points, choose #K1960 Mainsheet Block Kit w/Single Blocks shown below.

To prevent the line from twisting or binding when used in a cascade or mainsheet system the blocks in this kit are supplied with a feature to lock the rotation of the shackle that is on top of the body of the block. With the use of an Allen wrench for the single blocks and an open ended wrench for the triple blocks, tighten the set screw (single blocks) or nut (triple blocks) to lock the shackle in position. When used as a swiveling block, ensure the set screw or nut is not tightened and the swiveling shackle can self-align to find the fairest lead.

• 1 x triple block for the traveler
• 2 x single blocks for the boom
• 1 x single block w/ becket for the boom
• 1 x single block for the base of the mast.