Features Durable: The tip is made of G2 carbide with a hardness of HRC55. Heavy-duty tungsten carbide tip, durable material, can easily handle hard materials, including hardened steel, stainless steel, ceramics and glass. Comfortable to use: Delicate and practical, high hardness, firm and strong. Convenient to use. Anti-drop, the handle provides maximum control and comfort. Convenient to carry: Convenient pen design and pocket clip, reversal safety, self-contained chuck.Less wear, less damage, not easy to roll edge. Multi-purpose: Whether you are working on wood, metal, plastic, ceramic or glass, this precision tool can provide you with precise fine-line marking capabilities. The needle can be used in steel, brass, plastic, glass and other materials. Feature: The needle of scriber heat treatment is 50-55 degrees. The scribe is held firmly in the handle by a knurled chuck and when not in use can be reversed, telescoped into the handle, and locked by the chuck. Suitable for marking and punching steel needles, ceramic tiles, alloy steel plates. Features: The tip is made of G2 carbide with a hardness of HRC55. Less wear, less damage, not easy rolling edge. Suitable for marking and punching steel needles, ceramic tiles, alloy steel plates. The needle can be used in steel, brass, plastic, glass and other materials. Delicate and practical, high hardness, firm and strong. Convenient to use. Specification: Tip material: G2 carbide Peak hardness: 55 HRC Diameter: 10 mm. Length: 128mm/5.04inch Package list: 1 x needle Package List