Suncor's stainless steel 360 Degree Chain and Anchor Swivel Shackle is precision cast and made from grade 17-4 PH stainless steel for maximum corrosion resistance and durability. It swivels 360 degrees and is equipped with a solid bronze thrust washer and a stainless steel screw pin. Multiple sizes are available to fit 1/4" to 1/2" chain.