This triple block is typically used on the traveler of 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.

If you require a retrofit kit for use with this triple block, see #K1841 Mainsheet Block Kit w/Triple Block shown below.

To prevent the line from twisting or binding when used in a cascade or mainsheet system this block is 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 open ended wrench, tighten the nut on top of the block body to lock the shackle in position. When used as a swiveling block, ensure the nut is not tightened and the swiveling shackle can self-align to find the fairest lead.

Approximate Dimensions:
• Shackle pin diameter: 5/16"
• Sheave diameter: 2-5/8"
• Maximum line size: 1/2"
• Bearings: Delrin
• Safe working load: 2400 pounds