Heavy Duty Triangle-Ring Picture hangers or strap hangers are steel ring hangers held by a doubled over steel strap. Our Triangle-Rings have the most inside wire/ring wrapped around the strap which makes this heavy duty picture hanger stronger than others. One screw hole to securely attach the picture hanger to a wood picture frame or wood project. Triangle-Ring hangers can be used with wire by placing two on the back of a frame. Or you can use triangle-rings without wire and using the ring itself to hang on a hook or screw on the wall. Strap hangers come in many sizes and finding the correct size strap hanger for your wood frame is important. You can see the detailed measurements for the triangle-ring hanger in the photos. The hanging hardware includes 3*12mm screws which are pan head sheet metal screws with a combo slotted Triangle Ring Picture Hangers with Screws , Pro Quality triangle-rings