When I work with wood, plastic, metal, and other materials, it can be difficult to keep track of the best speeds for different sizes and styles of drill bits. If I’m drilling a 3/8-inch hole into acrylic, for example, I first look up the recommended speed. Then I pick a speed range, and zero in on the ideal trigger pressure by trial and error. But when I reached for a One-Key drill, I simply set the desired speed range and trigger ramp-up, and got to work. When I moved on to drilling aluminum, I didn’t have to look up the settings again. I just switched to another preset mode.