Measures disc brakes and up to 16 in. on brake drums. Resolution: .0005 in./.01mm. Range up to 16 in./400mm. Direct inch/metric conversion. Includes Xtra Value Electronic caliper This Drum and Rotor Measuring Kit measures disc brakes and up to 16" on brake drums. Kit includes set of clamps; 4 sets of set screws; 1 Allen wrench; 1 set of 3-3/4" contact points; 1 set of 3/4" cone contact points, 1 set of 3/4" flat contact points in plastic tube and 1 pair of 2 in. extensions. When measuring brake drums only, add 8" to measurement, this allows for long cone & jaw widths. For use with 6" & 8" calipers. Kit is furnished in a shop hardened case.