1. Lathe Turning Tool SetThis set includes 4pcs 12mm lathe boring bar turning tool holders and 10pcs DCMT070204 carbide inserts with a wrench. Perfect for various turning operations on a lathe. 2. LonglastingThe lathe boring bar and carbide inserts are made of materials, ensuring toughness and hardness for long life. They are designed to reduce tool grinding costs and improve cutting efficiency. 3. Enhanced Cutting PerformanceWith good low temperature toughness, these tools provide improved surface gloss on the cutting pieces. They are for semifinishing and finishing operations, allowing for precise and smooth profiling. 4. The set comes with a variety of boring bar sizes and carbide inserts, providing flexibility and convenience in different turning tasks. The included wrench ensures easy installation and removal of the inserts.