This ISO caliper mount is asymmetric with one tab higher than the other. This is the mount to use when the material above the axle slot is minimal. Supplied unmitered, it must be mitered to fit the specific seatstay and dropout combination. It is 1/4" thick with a 51 mm hole-to-hole spacing. Relieved to reduce weight, it is machined from 1018 steel. It meets all ISO specifications.
Item sold individually.