Features: TungstenSteel material, specially carved high hardness material, heat-resistant and durable, with strong wear resistance Theblades aresharp, the carving is smooth, and can be processed with highprecisions, smokeless, odorless, and burr resistant Chamfer design with round handle and chamfer treatmentfor easy installation, firm clamping and anti slip, with wide applications Exquisite polishing withmirror finish, smooth friction of theblade, smooth carving without burrs, and rust prevention of mirror surfaces Safe and damage proof packaging, singleblade rubber sleeve protections, to protect props from damage Suitable for machine tools, advertising engraving machines, CNCmachining centers, and computer particle cutting machines. Suitable for processing materials such as hardwood, density board, acrylic, plastic, etc. Specifications: Material:TungstenSteel Size: approx 1/8 "handle handle diameter: 3.175mm/1/8'' Bladesdiameter: approx 0.1mm Cutting length:approx 15mm/0.59'' Total length: approx 27mm/1.06in Optional Angle: 20° / 30° Quantity：10PCS Package Includes: 10PCS Engraving Bits note: Due to the problems of lighting effects and shootingangles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment.