Features: Suitable for : Suitable for grinding, drill, mill and other supporting use.Commonly used in the processing of jewelry and crafts.The high precision of the hand tools, you can do what you want. Safe and environmental friendly: Low vibration and low heating production during operation. Effectively go to work and increase efficiency. Excellent jewelry making tools. High quality: Made of high quality metal, strong and durable in use.Not easy to rust and not easy to deform. Can be used with confidence. Convenience : Allows you to quickly change accessories such as burs, bits, drills and cutters etc.for Ideal for beginners and professional jewelers to learn and practice jewelry making. BEST GIFT: Easy and quick to use.You can enjoy the fun of jewelry making. A quality product is your first choice for a gift.It can be used to sculpt jewelry or wood. Specifications: Material: Alloy Size: Approx.16.2cm/6.37inch Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Engraving Hammer