The instrument holder can hold 3 diam.52mm instruments and is specifically designed to be mounted on the dashboard of your car giving a unique style and appearance to the interior of your vehicle. This triple gauge holder is made of high quality fiberglass allowing it to resist cracking, fading and warping while still giving your Impreza a custom fit and finish. The gauge holder for 1998-2001 Subaru is easily installed using bio-adhesive