These rim knobs work in correlation with sashlocks for efficient and easy use of the door when latching or locking. The door knobs can be fitted onto a sashlock and turned to latch the door in place of a key or can simply be used to help push or pull the door open. This rim door knob has been designed to last due to its sturdy and robust construction. This prevents the knob from breaking or snapping as can happen with lesser quality pieces. The plastic material used to contruct the knob can be used for internal or external use. The mortice door knob adds not just purpose when used with a sashlock or rim lock, but also style. The smooth finish of these black door knobs add a timeless elegance to your door that will not age or wear easily. These mortice door knobs are designed for use with a rim lock and are available for use in commercial or domestic buildings such as garage doors, shed lock, gate locks or outbuildings. They can be used as an external door knob or an internal door knob. This mortice door knob comes complete with all fixtures and fittings such as escutcheon and colour matched screws. Installing the door furniture is easy and can be done by anyone. The spindle can be cut to size according to your liking for ease of installation.