3 different angles: 20/30/60 degrees, tip diameter 0.1mm, handle 3.175mm (1/8 inch), suitable for 2D engraving and 3D sculpturing. High hardness: made of ultra-fine tungsten carbide, with sharper edges, high wear resistance and long service life. High efficiency: V-shaped design, mirror grinding, can be cut clean, without any burrs, to ensure high work efficiency. Usage: Mainly used for engraving acrylic, plastic, carbon fiber, particleboard, medium density fiberboard, printed circuit board, solid surface, wood and most other materials. Convenient storage: 1 set of 3 pieces, come with 3 different angles, 20 degrees, 30 degrees, 60 degrees, each angle 1 pc, equipped with mini plastic box, easy to store and carry. Cutting angle 20/30/60.