Product Description: Item Type: Router Guide Kit Material: Brass Uses: Cleaning work, hinge and dovetail milling, stair milling, pattern milling, conventional milling OD size: 10mm/0.4in, 12mm/0.5in, 14mm/0.6in, 16mm/0.6in, 18mm/0.7in, 20mm/0.8in, 24mm /0.9inch, 30mm/1.2inch Package List: 8 x Router Guides 2 x Locknut p> 1 x adapter Kit contains 8 of the most commonly used size guides, 2 lock nuts and 1 template guide adapter. With carrying case storage, can easily store tools, OD guide bushings specifications: 10 12 14 16 18 20 24 30. Ideal for cutting work, overlapping, hinge milling and much more. Made from brass to ensure sturdy durability and long-lasting high performance. The Router Model Guide Set allows you to use the router with ease and precision with a wide variety of models.