Evelots Best Quality Cordless Precision Engraver With Extra Tip Bit, Tools One engraver - multiple surface capabilities. Pen style tool engraves on wood, plastic, metal and glass. Perfect for personalizing valuables, collectibles, electronics and more. The internal DC motor rotates at 11,000 RPM. No long cords to get tangled - battery operated so goes wherever you need it to be. Trusted vendor. For years Evelots has provided unique products with a 30 day easy return policy, and 100% satisfaction guarantee.