Three-way wrenches earn their keep by putting the sizes you actually need within thumb's reach, and the Park Tool AWS-7 combines hex and Torx in a single Y-shaped tool. One arm carries a 4mm hex, another holds a 5mm hex, and the third gives you a T25 Torx—three fastener sizes that cover a surprising amount of modern bicycle assembly work. Stem bolts, bottle cage mounts, brake caliper mounting bolts, and disc rotor bolts all fall within this trio's reach.

The Y-shape design serves two purposes beyond compactness. For low-torque fasteners, spin the tool between your fingers using the other two arms as a handle for quick threading. When you need actual leverage for final tightening or breaking loose a stubborn bolt, grip the opposing arms and apply force through the working end. It's a more ergonomic motion than twisting a standard L-shaped key, and you're less likely to round out a fastener because your hand position keeps the tool seated squarely in the bolt head.

Park Tool stamps the size on each arm, so you're not squinting at the tool or test-fitting to figure out which end you need. The stamped markings hold up better than printed labels that wear off after a season of shop use or life in a saddle bag. Bonded construction keeps the individual bits permanently fixed in the handle body—nothing to come loose or rattle around.... Read More