Wichard Self-Locking Allen Head Pin Bow Shackle - 8mm Diameter - 5/16" [1344W] Hunting & Fishing | Rod & Reel Storage they are designed for boats

they are designed for boats with low headroom

Self-Locking Allen Head Pin D Shackle - 8mm Diameter - 5/16"

Some sounders have internal terminal blocks to which these bare wires can be connected

Height - 5

Wichard Self-Locking Allen Head Pin Bow Shackle - 8mm Diameter - 5/16" [1344W] Hunting & Fishing | Rod & Reel Storage they are designed for boatsSelf Locking Allen Head Pin Bow Shackle 8mm Diameter 5 16" Features: Self locking twisted shackle with allen head pin forged in grade 316L stainless steel The pin is locked into one of the indentations The head of the pin does not stick out from the shackle body and thus eliminates any risk of snagging No risks of loosening due to vibrations Outstanding working and breaking loads WLL: only for industrial applications (lifting i. e) CE marking