![SeaSure 25mm Double Block w/Shackle [00.21CRD]](https://www.bestmarinewiring.com/wp-content/uploads/2026/08/seasure-25mm-double-block-w-shackle-00-21crd.webp)
Description
25mm Double Block with Shackle
The 25mm plain bearing block range is one of SeaSure’s oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly hard-wearing and light.
Features:
- This range could be used to create purchasing systems for lifting, garage door mechanisms, storage solutions, etc.
- The 00.21 can be used to create a 4:1 purchase system to aid in lifting heavier objects and decrease the load on the rope
Specifications:
- Max Rope: 8mm
- Breaking Load: 1000kg
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