Guitarists looking for a compact multi-tool will appreciate the KyM Guitar Tool, a versatile tool consisting of Allen keys, in 0.05' with spherical head (1/8' and 3/16'), metric (1.5, 2.5, and 3mm), and metric with spherical head (4mm). Additionally, there are two Phillips screwdrivers (Phillips 1 and 2) and a 2.5mm slotted screwdriver.