Designed by U-MARQ® to accommodate smaller vessels such as shot glasses, champagne flutes and glass tumblers (from 15mm up to 70mm ID). This resin cup cone fits into the opening of your workpiece and helps center the piece on the engraving machine. Attach the cone to your Universal, GEM CX, Compact or Gem VX4 engraving machine and set the glass in place; the rubber coating holds glass securely and perfectly positioned while the engraving is done.