Chicago Pneumatic CP9361-1 Kit - 1/8 Inch (3 mm) Engraving Pen Air Scribe, Hex Shank, Rolling Throttle - 13500 Blow Per Minute T011970Engraving pen and precision chisel hammer Constructed of premium components for a superior durability. Easy handling and comfortable use with an adjustable power for a variety of applications and materials such as: metals, plastics, ceramics, and glass Take advantages of this CP9361 compact, light, durable and efficient chipping hammer. The CP9361 range is defined by 2 models, raw CP9361 and kit CP9361 1 (CP9361, pneumatic hose and filter, stylus,