The Petzl Coeur Anchor Bolt Steel Hanger and Bolt 12mm Pack designed for interior use is a low-cost option for low corrosion environments and non-permanent installations. The carabiner clipping is facilitated by the presence of a wide, user-friendly connection hole that enables you to 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 will not turn while the anchor is being installed because the textured back prevents that from occurring. In addition to the 12mm diameter bolt, Coeur Steel hangers are also available with 10mm diameter bolts.