1. Durable and Reliable The 12 mm 7 mm milling collet is made from quality materials, ensuring durability and longlasting performance. You can rely on its stable construction to effectively handle your routing tasks. 2. Fit: Please ensure this collet is compatible with your router model before . It is specifically designed for DW616, DW618, DW621K, and other compatible models. A precise fit guarantees performance and prevents any compatibility issues. 3. Wide Compatibility: This milling collet is compatible with a range of models, including DW616M/D/PK, DW616P/S/SK, DW618, DW618D/M, DW618P, DW618B3E, DW618PKB/K/PK, DW621K, 1617, 1617EVS, 1618, 1618EVS, 16133, 1613EVS, 1613AEVS, 1619EVS, MRC23EVSK, MRF23EVS, and MRP23EV. It offers versatility and convenience for various routing needs. 4. Material: Made from metal, this milling collet provides strength and stability during operation. The black color adds an elegant and professional touch to your router setup.