Features:Quick and Efficient Reading - The brake thickness gauge allows you to quickly measure the external & internal brake pads to help identify if a vehicle has a sufficient amount of brake pad lining.Color Code Indicator Scale - Designed with an easy - to - use and readable color code scale - Red = Replace, Yellow = Caution, Green = Safe which allows the user to quickly check brake thickness levels in a safe manner.8 Piece SAE & Metric Gauge - 8 piece swatch style drum brake gauges are designed to help determine the level of wear to the brake lining of the vehicles in the following Metric/SAE sizes: 2mm (0.0787 inches), 3mm (0.1181 inches), 4mm (0.1575 inches), 5mm (0.1969 inches), 6mm (0.2362 inches), 8mm (0.3150 inches), 10mm (0.3937 inches), and 12mm (0.4724 inches).Durable and Ligthweigth Steel Design - Constructed to be compact and calibratable for portable ease and to ensures long - term performance and durability of both the tool and your brake pads.Application - Ideal for use with any vehicle; standard and heavy - duty transportation vehicles.Milton®'s 8 - piece Brake Pad Gauge allows you to quickly measure the external & internal brake pads to help identify if a vehicle has a sufficient amount of brake pad lining. This brake lining gauge is uniquely designed with an easy - to - use and readable color - coded scale. Red = Replace, Yellow = Caution, Green = Safe. Manufactured from durable lightweight aluminum, it's a brake pad gauge to ensure long - term performance and constructed to be compact and calibratable for portable ease. Reads the following metric/SAE sizes: 2mm (0.0787 inches), 3mm (0.1181 inches), 4mm (0.1575 inches), 5mm (0.1969 inches), 6mm (0.2362 inches), 8mm (0.3150 inches), 10mm (0.3937 inches), and 12mm (0.4724 inches). Milton® provides top - of - the - line solutions to all pneumatic automotive service applications.