Trawling Shackle D Type Square Head Pin, also known as trawling bow shackle.
The trawling D shackle with square head pin, made from superior mild steel, and surface finish is blue painted generally.
This D shackle with square head pin is commonly used in the fishing and trawling industry.
Safety factor of square head pin bow shackle is MBL equals 4 × WLL, we have the WLL from 1Ton to 7Ton. And you can choose the size from 10×12mm to 32×35mm.