Be sure to add me to your favorites list Casio 1990's Vintage Keyboard Slider / Selector Knob Replacement Part, Black. 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 have been some models that slid up and down too. This one is black in color. Unfortunately, these are very easily lost on some models, so here's a replacement if you needed one! The length of this slider is 1.8 cm, the width is .5 cm, and the rectangular tab on the bottom of it where the stem on your keyboard fits into is .5 cm 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-260 model, but there are several other models that used them as well. This one is in very good condition, and I have several of them available. Thanks for looking, Check out my Store!