Five superb quality Forstner bits, covering a range of useful sizes: 15, 20, 25, 30 and 35mm. As part of our universal Quick Change System, they will fit into any quick change system including Festool's Centrotec. These Austrian made Forstner cutters have an excellent cutting edge that give smooth cuts every time. They produce clean, accurate and flat bottomed holes. Manufacturing each bit from a single piece of steel means they are exceptionally strong. Designed for tools that accept 1/4" shank hex as well as standard drill chucks, these Forstner cutters will perform in soft and hardwood as well as manufactured boards. For the best results, use in a pillar drill.