Pneumatic Air Scribe Great For Metal smiths, Metal Working, Hobbyists & Jewelers This is a new pneumatic air scribe with an industrial diamond tip used for marking metal, glass, wood and plastic comes with an air hose, handpiece, 2 adaptors & 0-1/2" (139.7 mm) long, This is a new pneumatic air scribe with an industrial diamond tip, Used for marking glass, wood and plastic, Comes with an air hose, handpiece, 2 adaptors & o-rings, Hooks up to air coompressor (not included), The Handle Measures approximately 5 1/2" (139.7 mm) long.