Be sure to add me to your favorites list 1990's Vintage Casio Keyboard Slider / Selector / Knob Replacement Spare Part. This is a slider selector / knob from a 1990's era "MT" model Casio keyboard. These parts were used on many models to control volume / tempo / effects. They usually slid horizontally, but there may have been some models that slid up and down too. Unfortunately, these are very easily lost on some models, so here's a replacement if you needed one! The length of this slider is 2.4 cm, or 15/16th" of an inch, the width is .5 cm or 13/64th" of an inch, and the rectangular tab on the bottom of it where the stem on your keyboard fits into is .5 cm or 13/64th" inches long. Many stems on Casio keyboards will fit into this, but check yours first, or ask and I might be able to help as well. These came from an MT-240, but there are several other models that used them. This one is in very good condition, and I have several of them available. Thanks for looking, Check out my Store!