Gauge tool avoids the hassle of replacing a serpentine belt prematurely while also being confident of not being stranded with engine damage from belt failure.  A must have tool especially for serpentine belt driven superchargers!

Comes with a key hole. Make several purchases to keep in each vehicle or gift to family and friends.

Free instructional index card included with each purchase. Picture depicts the different sides/uses of the tool. Will include only one tool per purchase.

Direct from Dayco website -

Today's belts are now made with an EPDM extended-life rubber compound.  These EPDM constructed belts wear completely different than Neoprene.  Dayco's new aWEARness Gauge is designed to gauge wear and estimate belt wear.  By simply placing the notched area lengthwise over the ribbed section of the belt, this pocket size device quickly and easily identifies the potential of serpentine belt failure.  If there are more than four cracks per inch in the belt, trade practice recommends the belt be replac