Self-contained sheaves are designed for sailors to use in custom applications. 16 mm AirBlock® sheaves are Delrin® and feature stainless ball bearings that ride in a grooved race.

The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load—the highest on the market compared to similarly sized blocks.

Use for:

• Dinghy control lines
• Spinnaker pole trip lines
• Big Boat leech lines
• Outhauls
• Downhauls
• Cunninghams
• Traveler controls
• Halyards on prams

Specifications:

• Sheave Ø: 16 mm | 5/8 in
• Width: 8 mm | 5/16 in
• Weight: 4 g | 0.13 oz
• Center pin Ø: 4.75 mm | 3/16 in
• Maximum line Ø: 5 mm | 3/16 in
• Maximum working load: 113 kg | 250 lb