High-concerned chemical: None - Crafted with user safety in mind, this tool contains no harmful chemicals, making it a safe choice for all your engraving needs on materials like metal, wood, and glass. Battery Included: Yes - This mini grinder comes with a battery, ensuring you can your projects immediately without the hassle of purchasing a separate power source. Ideal for continuous use in various crafting scenarios. Power Source: Electricity - Powered by electricity, this tool offers consistent performance and reliability. The cordless design enhances mobility, allowing you to work on projects without the limitation of cords. Certification: CE, FCC, RoHS - This mini grinder is certified by CE, FCC, and RoHS, ensuring that it meets high standards of safety and quality, giving you peace of mind while working on your DIY projects., Weight: 1.10231131 pounds, Manufacturer: Ounfhtrttk