Stainless steel construction with full stainless cheeks won't weaken and break due to exposure to sunlight. The bearings are always contained by the stainless and wont drop out over time.
Usage:
• Upper mainsheet block for Capri 18
• Upper mainsheet block for Capri 22
• Upper mainsheet block for Catalina 22
• Upper mainsheet block for Catalina 25

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:
• Shackle pin diameter: 3/16"
• Sheave diameters: 2" & 1"
• Maximum line diameter: 3/8"
• Bearings: Delrin
• Safe working load: 1150 pounds