The router bit set includes: Straight drill 6mm (1/4') - Straight drill 12mm (1/2') - Straight drill 16mm (5/8') - 90° V-groove drill 12.7mm - 45 Degree Chamfer drill 32mm (1-1/4') - Dovetail drill 12.7mm (1/2') - Flush drill 12.7mm (1/2') - Round drill 1/4') - Round drill to R9.5mm (3/8') - Flush drill neck R6.3mm (1/4') - Roman Ogee drill R4mm (5/32') - Alan Key The universal 1/4 inch shank can be used. All router bits feature 1/4" carbide router bit tips and sealed bearings for smooth rotation and precise cuts. High Quality Tungsten Carbide Blades - TCT blades can be renewed. sharpened sealed bearings for smooth rotation and precise cuts. With an antioxidant coating on the blade head, these bits are durable and have a long service life. Easy to Identify and Organize. The starter router bit set is labeled with the bit type and with a matching picture, contained in a wooden box, making it easy for you to choose the router bit set you want. With the storage box, you can conveniently