Pedal-Stay I Foot Pedal Support Pad 3 1/8" fixed slot will fit base of a pedal with that width only Sewing machine pedals stay put on a special non-skid vinyl pad This is the most useful, low cost accessory to include in any sewing room, or wherever you use your sewing machine. Nothing works better on either carpet or hard floors to hold a foot pedal in place. Others using our Pedal-Stay pads include jewelers, craftsmen, sculptors, and even tool makers  virtually anyone working with a flexible shaft machine requiring a rheostat or pedal. A quality product made in the USA of durable vinyl