It is also appropriate for a spinnaker sheet blocks on the Catalina 30.

We have these blocks fabricated with special Torlon high load bearings to provide a working load of 2800 pounds. The 2-5/8" diameter sheave will handle line up to 1/2" in diameter.

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 Allen wrench, tighten the set screw to lock the shackle in position. When used as a swiveling block, ensure the set screw is not tightened and the swiveling shackle can self-align to find the fairest lead.

Approximate Dimensions:
• Sheave diameter: 2-1/2"
• Line diameter: 1/2"
• Bearings: Torlon
• Working load: 2800 pounds
• Fasteners: 1/4"
• Mounting pad diameter: 2-3/4"
• Fastener hole pattern: 1-7/8" diameter matches early Merriman block's hole pattern.