The brake gauge tool was designed to give customers an accurate measurement of how much brake lining is left without guess work.
Red: 2mm(0.0787"), 3mm(0.1181")
Yellow: 4mm(0.1575"), 5mm(0.1969"), 6mm(0.2362")
Green: 8mm(0.3150"), 10mm(0.3937"), 12m(0.4724")