Three socket sizes on one tool means three fewer things rolling around your workbench or disappearing into your toolbox. The Park Tool ST-3 combines 8mm, 9mm, and 10mm hex sockets into a Y-shaped wrench that handles the most common bolt heads you'll encounter on a bicycle. Crank arm bolts, axle nuts, rack mounts, fender hardware, and various accessories all tend to cluster around these three sizes, and having them connected means you're not hunting for the right socket when you're halfway through a job.

The Y-handle design provides natural leverage without requiring excessive length. Each arm acts as a handle when you're driving one of the other two sockets, giving you enough torque for snug fasteners without the bulk of a ratchet setup. The geometry also means the tool sits flat and stays put when you set it down, which sounds minor until you've chased a rolling socket across a garage floor for the third time in an hour.

Stamped steel construction keeps weight reasonable while maintaining the durability expected from shop tools. The socket openings are sized for standard hex bolt heads, not Allen key interfaces, so this covers the hardware that your multi-tool's hex wrenches can't reach. Wheel axle nuts on single-speed and BMX bikes, older quick-release skewer nuts, training wheel hardware, and accessory mounting bolts all fall into ST-3 territory.... Read More