Harken's Carbo Ratchet Swivel Blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. All three blocks have ON/OFF switches, so you can stop the block going back on itself.
|Shackle Pin Diameter||4mm||5mm||6mm|
|Maximum Line Diameter||10mm||10mm||12mm|
|Maximum Working Load||136kg||227kg||341kg|
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