chain swivel Material:carbon steel Specification:G400,G401,G402,G403 Finish: Self ... & hot dipped galv & zinc galv 2) Material:carbon steel chain swivel.3) Specification:G400,G401,G402,G403.4) Heat treated: Tempered ... machines7) TIips:samples you designed are also acceptbleswivel forged regular double round eye,Machine swivel double round eye,double round eye.