Features:

• Head and body molded from durable, corrosion-proof plastic.
• Even a non-technical person can learn to operate in a few minutes.
• Grooves plastic, polycarbonate, or glass lenses in only 40 seconds.

4 Precison Control Settings

• Auto centering, puts groove in center of lens edge.
• Groove follows front curve of lens
• Groove follows back edge of lens.
• Adjustable groove depth control.