Description It is useful to operate electronic device, perfect for electrician, mechanic andrepair work. 1/4 inch quick-change shank fits drill chucks, impact drivers, adapters,extensions and bit holders. Can be hand carved 1/3 of the force, 3 to 5 times the speed of engraving, without fatigue. High speed vibration of 25000 times per minute is generated after the head touches the wood, and it is carved with the ultra high speed vibration. Professional-grade power tool accessory for larger Phillips head fasteners. Blades have special non-slip grooves for better grip on screw face. Made of high quality materials with meticulous work. In addition to general timber, you can also carved ebony, soft plastics. Shell is solid, excellent thermal efficiency, is safe to use. Professional carving, both amateurs and worker can use. Mainly used for wood, furniture, sculpture, antique floor sculpture, potted plants and so on. Note It can not be used singly, should be used with electric tools, such as hanging grinding machine.(The motor speed should be less than 12,000 RPM) Pls take it and go to the hardware shop to buy the correct electric packs if you don't have hanging grinding machine. Specification Color: Yellow Material: Steel Size: 1582828mm Type: Chisels Sub-Type: Wood Chisel Set Package Includes 1 set x Wood Chisel Carving Tool Set Should be used with electric tools, such as hanging grinding machine