Selden Anti-twist shackles M8,L=220
545-130-01R
Anti-twist shackles CX15 GX15
The Anti-Twist shackle is an optional shackle connecting the halyard to the halyard swivel. The long pin will lean against the mast and prevent a “soft” halyard from twisting.
This shackle is not necessary for a 2:1 halyard set up nor is it for a high quality Dyneema ®halyard.