Bump switch

The DW660 Heavy-Duty Cut-Out Tool is a tool-free bit changing system that allows locking the spindle and swapping bits without a wrench. Using an industrial-grade 5-amp motor, it produces 30,000 rpms and 25 percent more power, making it well suited for multiple-layered drywall or long wood cuts. The tool features a sealed turn-on/bump-off switch located on the back end of the unit, allowing the user to shut off the tool by bumping the switch against the body.