Swivels are independent of the headstay, allowing you to tension the luff separately from the mast rake.
Specifications
Pin-to-pin length (mm): 97.4 mm
Pin-to-pin length (in): 3 27/32 in
Maximum luff wire Ø (mm): 5 mm
Maximum luff wire Ø (in): 3/16 in
Clevis pin Ø (mm): 8 mm
Clevis pin Ø (in): 5/16 in