8 Mm router bit set with 12-pieces feature: specially designed for woodworking. Ideal tool for woodwork with the 12 pieces set router bits. Satisfy your different needs with the 12 different diameter bits. Convenient to carry with the compact wooden box. Update your woodworking tool kit with this precise router bits set. Be careful of the sharp cutter point on the rounter bits. Specification: material : metal shank diameter : 8 mm each one diameter 1. 12.7Mm (cove box bit ), 2. 22Mm (bearing cove box bit) 3. 12.7Mm (dovetail bit:) 4. 32Mm (bearing 45° chamfer bit) 5. 12.7Mm (bearing flute trim bit ) 6. 16Mm (straight bit) 7. 22Mm (rounding over bit) 8. 6Mm (straight bit ) 9. 28.6Mm (rounding over bit) 10. 12.7Mm (grooving bit) 11. 25Mm (roman ogee bit) 12. 12Mm (straight bit ).