The Petzl Coeur Anchor Bolt HCR Hanger and High Corrosion Resistance Stainless Steel 12mm 20-Pack available at OmniProGear is made to be used in environments that are especially corrosive. Composed of an HCR hanger, a nut and a bolt, the assembly's carabiner clipping is facilitated by a wide, user-friendly connection hole that lets you install two carabiners at the same time. Connectors will not get worn down as easily thanks to the hanger's thickness and the connection hole's rounded edges. The hanger has a textured back so that it will not turn during installation of the anchor or when heavily laterally loaded during use. OmniProGear offers this product at significant savings, and you can often find products at OmniProGear before they are available anywhere else.