The Carlisle Brass M40 Cylinder Pull Polished Brass is very practical & fits around a Yale type cylinder used on a nightlatch, typically on a front door. It is used to pull the door closed from the outside. A cylinder pull is particularly useful if there is no door handle or centre door knob on the external door which would be used to pull it closed. The pull is made from solid brass & has a polished brass finish. It will require a little more care & attention than a chrome cylinder pull, but a clean with mild soapy water & a light coating of wax every so often will keep it in go...