Our Doctor's door knocker is forged from solid bronze. Its high-quality materials and exquisite design make it a perfect choice for external doors, with many matching products available. Supplied with matching 70mm stainless steel threaded bars and dome headed caps. Fixes to your door using a bolt-through fixing for the knocker and strike plate which is fitted with a dome head cap on the internal side of the door. Overall Length: 196mm Fixing Plate: 57mm dia. Projection: 69mm Stud: 51mm dia.