7 different sizes: the router kit contains 7 different sizes, 3 mm/4 mm/5 mm/6 mm/8 mm/10 mm/12 mm. Shaft 6mm Variety of options to meet your needs. High-quality material: the router set is made of high-quality hard alloy, more wear-resistant, anti-distortion, rust-proof, antioxidant and tear-resistant. Multi-purpose: suitable for wood, MDF, chipboard, plywood compact board. Please avoid cutting ferrous metals and other hard materials, steel, iron, etc. Perfect for woodworking: for trimming and grooving, for refining wood projects. It is ideal for carpenters and hobbyists of all levels of experience. Package includes: 7 pieces straight cutters for woodworking. Specification: Case material: solid hardened steel. Blade material: industrial grade micrograin carbide Shank: 6mm Cutting depth: 13mm/20mm/30mm. Cutting diameter: 3mm/4mm/5mm/6mm/8mm/10mm/12mm. Application: for sloting, trimming and cutting. Package Includes: 7 x Straight Cutter Set [Tips] 1. Please lower the speed and feed speed of your machine appropriately to avoid excessive speed and damage to the blade. 2. It is recommended not to cut wood with too high hardness to avoid incomplete cutting. 3. It is recommended not to cut the composite plate with glue, the adhesive will make the blade black and affect the use of the blade.