Diamond glass cutting wheel crystal tools

diamond cutting wheel 110 mm in diameter 15 mm wide 6 mm of diamond, grit D 30, bore 42 mm 125>. Over the years of cutting class and crystal I have found those wheels the longest lasting and hold of its edge and cutting power. They are German made. The wheel has been in storage for over 20 years. I have a good supply of other diamond wheels. Please contact me with inquiry