General description These 6pcs HSS Chuck Head adapters are designed for use with drill engraving machines, trimmers, and electric carpentry routers. They come in three different hole diameters (6mm, 6.35mm, and 8mm) to accommodate various needs, ensuring high precision and stable clamping for improved work efficiency. Technical specifications Hole diameters: 6mm, 6.35mm, 8mm Material: Carbon steel Included: Two 13mm nuts Usage These adapters are suitable for use with engraving machines, wood routers, and other similar tools, providing flexibility and wear resistance for various applications.