Picture frame D Rings.
Picture frame hanging involves choosing hanging hardware to match your picture frames size and weight.
These are the simplest type of hangers which screw into the frame moulding for attaching the cord to.
The D Rings come with a single hole, and are available in 3 sizes:
Small 8p each or x 100 £6.00
Medium 15p each or x 50 £6.00
Large 25p each or x 20 £4.00