This replacement plastic stop button cover fits some models of treadmills by Precor. The button cover includes the tether and clip.  The stop button cover is for use with a micro switch that measures 3/8" x 1 1/8".

If replacing the stop button cover for a "subminiature" micro switch (1/4" x 3/4"), you will need the stop button retro kit that includes the replacement micro switch, stop button cover, switch mount, safety switch cable assembly, and hardware.

Micro switch and switch mount are sold seperately.