GRS® GraverMach® AT Air System Rolo the blue color is due

the blue color is due to the traces of vanadium in the crystal structure

Lenses are plastic

or as one element in more complex necklace and bracelet designs

And most importantly

Dimensions: 27 x 10

GRS® GraverMach® AT Air System Rolo the blue color is dueThe GRS GraverMach AT air system balances substantial power with the delicate precision needed for detailed engraving, making it the most intuitive system available. A brushless DC motor and streamlined internal design ensure exceptional reliability and durability for years of dependable service. The GRS GraverMach AT air system offers separate controls for power and speed, making it ideal for a variety of applications. The quick connect fittings are