1. Compatible with Various Sizes: These collet chucks are designed as split bushing converters, allowing you to easily switch between 6 mm, 35 mm, and 8 mm collet sizes. With these adapters, you can achieve versatility and compatibility for various applications. 2. **Durable and Reliable**: Made from strength carbon steel, these collet chucks are built to last. They undergo rigorous heat treatment and precise grinding processes, ensuring durability and hardness. You can rely on them for longlasting performance. 3. Easy to Use: The precise design and machining of these collet chucks make them simple to operate. Insert them into your trim router or wood router, and they securely hold the desired collet size. No complicated installation or additional tools required. 4. Wide Range of Applications: These collet chucks are specifically designed for trim routers and wood routers, making them suitable for various woodworking projects. Whether you're a professional or a DIY enthusiast, these collet chucks will meet your needs.