Be sure to add me to your favorites list 80's Vintage Casio Keyboard Slider / Selector / Knob Replacement Spare Part, Dark Gray. This is a slider selector / knob from a 1980's era vintage Casio keyboard. These 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 3/4" inch, the width is fraction over 1/4" inch, and the rectangular tab on the back of it where the stem on your keyboard fits into is 1/4" 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. This one is in very good condition, and I have several of them available. Thanks for looking, Check out my Store!