Nib size:4mm Function:Detecting Counterfeit Money Currency:Multi Currency Include USD Application:Bill and Note Tip:Bullet or Chisel Feature:slight yellow on authentic note and black on fake note Advantage:convinient and quick to protect your assets Report:MSDS Key words:fake note detector marker, money tester pen, couterfeit money detector Product Name:Universal Counterfeit Money Detector Marker Pen Show More