Brake pad thickness gauge set for inspecting wear on brake linings. Fits between the disc & brake pad backing plate. 9 blades conveniently marked in both metric & imperial units. Range: 6 - 22mm (0.2362" - 0.8661"). Always consult manufacturers recommended measurements; many OEM brake manufacturers for HGV’s recommend pad replacement at around 5mm. Designed to allow a definitive report on remaining pad thickness to be made so recommendation can be made to the vehicle owner.