Wooden Shell Snatch Block With Hook, it's a US type, we also call it Wood Pulley With Hook. Pulley and Block are common lifting mechanisms used for rigging and can be used with Wire rope or Nylon rope or Chain.
Regular Wood Block Single Sheave With Hook, This product is lighter and the hook we use is hot dipped galvanized, It has the advantages of a thick zinc layer and high corrosion resistance. Wooden Block is well used all over the world. Used in ships and marine fishing.
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