Spring hinges to suit either single swing doors or double swing doors. Typically used on bin stores, ranch doors, food industry doors and factory cabinets. With adjustable spring strength to alter closing power, supplied with tension bar and locking pin. Lubrication hole in knuckle. Riveted head standard for silver sprayed finish (except 200mmsize) and classic threaded cap standard on stainless steel patterns. Brass and stainless steel hinges are only available with threaded classic caps.