Introduced by Park Tool over 40 years ago, our Y-shaped wrenches fit perfectly in the palm of your hand and provide excellent leverage, making them a favorite of mechanics in bike shops worldwide.
The Park Tool ST-3 combines the three most common bolt and nut sizes found on a bicycle into the iconic shape of a Park Tool 3-way wrench, for use on brakes, racks, accessories and more. forged chrome vanadium steel sockets.