Beyond mere convenience, the Bosch hammer drills offer the capabilities of three tools - drill, driver and hammer - for carpenters, electricians, maintenance, HVAC and fire protection professionals. With the simple change of a bit, the Bosch cordless hammer drills easily complete tasks such as installing metal studs with light 3/8-inch self Tapping Screws, drilling 1/4-inch holes for tapcons during electric box installation or when strapping duct work on concrete, and creating small diameter holes for plumbing fixtures and metal door frames.