Murray Push Button Knob part# 92572MA has an outside diameter of 5/8" and is 1-1/2" tall. One end of the button is drilled an tapped with 1/4-20 pitch thread. We were unable to locate a list of models that use this part, but it is most likely a detent button for a mower deck lift lever. Please refer to your owners manual or a parts breakdown for your model, to assure that this is the correct part for your machine, before you order.