This set of 2 x 2 Schaller M4 90 Light Bass Tuners is a lighter weight version of older M4 tuners (now 52 g per tuner). Featuring a 1:20 gear ratio that tunes up quickly and accurately and the sealed tuners are lubricated with Schaller's special grease for a lifetime of maintenance free service. The mounting screw is in line with the tuner post which is the most common screw placement for sealed bass tuners and this 2 x 2 set can be used with either right or left handed bass guitars.

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