Usage Tips: Keyhole Router Bits Set, a comprehensive collection of 1/4 Inch Shank Tools including 6 pieces with variations in diameter such as 1/4, 5/16, 3/8, 9/16, 1/2, and 5/8 Inches. This router bit set is ideally built for wood hex bolt T-track slotting and milling applications. Suitable for professionals and DIY enthusiasts. Made with C2 carbide inserts, this cutter set ensures long-lasting performance and a superior finish. The professional router bits offer high resistance to heat and abrasion, engineered for high-quality results and extended use. TOTOWOOD's Router Bit Set features a solid hardened steel body. The anti-recoil design ensures precision and smooth operation. The blades are razor-sharp and can be resharpened and polished to maintain performance and deliver clean cuts. Expand your woodworking capabilities with this 6-piece Router Bit Set. Ideal for creating a wide range of T-slots or keyhole slots. Compatible with various materials including solid wood, particleboard, MDF, plywood, and more, adding versatility to your toolkit. Designed for use with portable and desktop woodworking engraving machines, this Keyhole Router Bits Set is optimized for performance. Do not use in electric drills or drilling machines to ensure optimal function and longevity. Color: As shown in picture Material: Metal Package Contents: 6 x Hole cutter Only the above package content, other products are not included. Note: Light reflection and different displays may cause slight color variations between the item in the picture and the actual item. Measurement may vary by +/- 1-3 cm.