Features: Size: 3pcs 6.35mm or 6mm shank keyhole router bit set,and 5/16 , 3/8 and 1/2 inch in blade diameter. Usage: Perfect for long T slots as well as to make keyhole slots for hanging purposes, picture frames, shelves, cabinets, support fixtures and other wall hangings etc. Wide Applications: It is can be used for spherical door tip installation, drawer, plastic, wood, plywood, etc. High Quality: Made of carbon steel with good processing quality, durability and long service life. Lightweight and Portable: These keyhole router bits are easy to use and store, and it is convenient for you to carry when working. Specifications: Material: Carbon Steel Color: Green Item Size: 6mm / 6.35mm (Optional) Package Size: 8.5 * 5 * 2cm / 3.3 * 2 * 0.8in Package Weight: 53g / 1.9oz Package List: 3 * Keyhole Router Bit