The two way locking spindle in the shackle allows connection to fixed loops such as wire strops, rigging plates, & harness bridges. The fixed eye can be clipped (with a Prest-in configuration aid if needed), spliced in, swaged in, etc. as required.
The small D shaped shackle keeps single attachments neat & predictable whereas the increased size of the bow-shaped shackle allows complex set ups to be achieved by catering for loading across the shackle.
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