A captive 17-4PH Stainless steel pin makes for trouble-free oporation.
The all-metal machined line thimble allows for use as a 2-1 purchace without the wear or melting that occurs with plastic molded thimbles. Lines can also be permanently spliced for a fixed halyard.
Tylaska CNC machines the shackles from a solid block of aluminium. Type 111 hard coat anodizing protects against corrosion. Laser engraving identifies the product without sacrifice to strength or risk of corrosion.