Tylaska produces the best snap shackles available. Not only are they stronger and more reliable then any other snap shackle available, they can be opened under high loads using a fid or a spike. The snap shackle comes in 6 different sizes.
Which size do you need? T5 - suitable for 6 - 8mm rope (20 - 30ft boats) T8 - suitable for 8 - 12mm rope (24 - 36ft boats) T12 - suitable for 12 - 16mm rope (30 - 50ft boats) T20 - suitable for 50 - 70ft boats T30 - suitable for 60 - 80ft boats