Material: High Speed Steel Extension rod diameter: 3.175 mm Quantity: 7 pcs Suitable for: wood, plastic, cutting, hobby, craft, aluminium and soft metal Why you need these bits Durable cutting performance: High Speed Steel (HSS) stays sharp longer and withstands heat, so you get consistent cuts across different materials without frequent bit changes. Versatile and practical: Designed for a range of small-scale cutting and shaping tasks — from hobby projects to light metal work — reducing the number of specialized bits you need. Ready-to-use pack: Seven pieces give you backups and options for multiple projects or replacements when a bit wears, keeping your workflow moving. Key benefits and problem-solving Cleaner results: HSS edges help reduce chipping and tearing in wood and plastic and provide smoother cuts in soft metals like aluminium. Reliable fit: The 3.175 mm extension rod diameter fits tools and collets that accept 3.175 mm shanks, providing a secure connection and stable operation. Cost-effective: Bulk quantity means lower per-bit cost and fewer interruptions to restock during a project. Performance and compatibility Function: Cutting and shaping for hobby, craft, and light metal work. Material suitability: Effective on wood, plastic, aluminium and other soft metals. Size: 3.175 mm shank diameter for small tool compatibility. Construction: High Speed Steel for wear resistance and thermal stability. Use scenarios Model making: Trim and shape plastic model parts and remove flash cleanly for accurate assembly. Woodworking and carving: Detail work on small wooden pieces or inlays where precise, controlled cuts are needed. Prototype and light metal work: Cut or deburr thin aluminium panels and soft-metal components during prototyping or repair tasks. What to expect in the box Seven HSS cutting bits, each with a 3.175 mm extension rod diameter, ready for hobby, craft, and light metal cutting tasks. Notes Intended for cutting and shaping wood, plastic, aluminium and soft metals; performance depends on tool speed, technique, and material thickness.