Stubborn fasteners need leverage, and a breaker bar delivers exactly that without the ratcheting mechanism that can fail under high loads. The Park Tool SWB-15 gives you a 15-inch handle with a 3/8-inch drive head, purpose-built for those moments when a standard ratchet handle just spins or flexes instead of breaking the fastener free. Bottom bracket cups seized from years of neglect, cassette lockrings that were installed with an impact driver, or pedals that haven't moved since the previous owner installed them—these are breaker bar territory.

The 3/8-inch drive head accepts the same sockets you're already using with Park Tool's torque wrenches and ratchets. That means your existing BBT-series bottom bracket tools, FR-series cassette tools, and standard sockets all work with the SWB-15. The head pivots to allow better positioning when clearance is tight, and the chrome vanadium steel construction handles the forces involved without the flex you'd get from a cheaper tool.

Breaker bars work because physics works. That 15-inch handle multiplies your input force at the fastener, letting you generate the torque needed to overcome corrosion, threadlocker, or just aggressive installation without straining. Once the fastener breaks free, you switch back to your ratchet for the faster removal. It's a one-job tool that does that job better than anything else in your toolbox.... Read More