^ RED ROOSTER LEADING IN POWER TOOL SOLUTIONS The RED ROOSTER engraving pen has a very high frequency, enabling to write smoothly on various materials. Examples: Steel, Bronze, Alloys, Copper. Also to be used on stainless steels, as the tip is tungsten carbide. Three sizes of tips available. Medium size delivered as standard. Engraving Needle Fine RRI-9010 I Engraving Needle Coarse RRI-9010 Y 2-01-011-91 Engraving Needle Medium RRI-9010 Specifications Brand Airconsumption (l/s) Weight (kg) Sound level (dB(A)) Airconnection Airpress max. (MPa) mm A Needle diameter (mm) Strokes per minute Hosediameter (mm) Vibration level (m/s2) Safety standard EAN