The Dual Sided Crombie Tool is refined graduation of this simple concept, with one side dealing with Shimano or SRAM cassettes, the other Campagnolo cassettes, so that there's no need to pack two tools for the job. Made in Bend, Oregon, it is precision machined from 17-4 stainless steel, so that the spline of each head fits perfectly for maximum torque and ease of use, with no slip.

Dual sided head can cope with both Shimano/SRAM and Campagnolo cassettes.