ITEM NAME:Car Brake Pad Scale Measure Ruler Lining Thickness Gauge Protection Tools img *{margin:0;padding:0;.Blue ruler: 8/10/12mm, brake pad is good, is in good working condition. Red ruler: 2/3mm, the pads must be replaced. 1x Thickness Gauge. A handy tool for essential brake pad service. For checking wear on brake linings.
