Industrial Chains: We have the complete series of the Chain Anchor . It's 18" Chain Anchor With 4" Delta Ring . Industrial Chains:We have the complete series of the Chain Anchor .·It's 18" Chain Anchor With 4" Delta Ring .·Breaking Strength:7,364kgs/16,200Ibs ·Materials: iron, stainless steel, aluminum·Surface treatment: Zinc plated, Polished, Raw, Anodized Industrial Chains