Feature: 1. The storage box can be used in splicing, and there are interfaceons on the left and right sides of the product. 2. The storage box can be spliced and used according to the situation, which is simple and convenient. 3. The milling cutter has the ability to resist chip removal, which makes the cutting smoother and does not stick to the knife. 4. The blade is covered with a coating to finely process the hot material for high‑speed roughing, reducing the number of tool changes. 5. Suitable for copper, stainless steel, alloy steel, tool steel, quenched steel and tempered steel, carbon steel, cast iron, heat‑treated hard steel. Specification: Item Type: ER11 Collet ChuckProduct Material: Plastic + steel Product Model: ER11 chuck pointed knife storage set Specifications: 2 boxes x pointed knives (2002, 3003), 15 x ER11 chucks, 1 x storage box Application Scope: Suitable for copper, stainless steel, alloy steel, tool steel, quenched steel and tempered steel, carbon steel, cast iron, heat-treated hard steel. Package List: 15 x ER11 Chuck1 x Storage Box20 x Pointed Knife