The Cobra Pro Drill/Breaker is a gas-powered multipurpose tool designed for tasks such as digging fencepost holes, driving tent stakes and demolishing materials such as concrete and asphalt. The tool can deliver 44 foot-pounds of impact energy at its tool tip, and also provides high percussive energy and high blow frequency. The Drill/Breaker has no compressor or hoses, and includes an improved tank cap for better regulation of tank pressure.