Up to 3 times faster than a standard drill - flat milling drills are a great accessory for electricians and other plumbers and builders. What if they could be even faster and more efficient? With Bosch Tip Technology, this is possible. The Expert SelfCut Speed offers the most advanced designs for flat milling drills. This makes it easy to use and extremely practical for professional users. The Bosch patented threaded tip pulls the flat milling bit into the wood with the slightest pressure from the user. This is especially helpful when you need to drill overhead or in tight niches. The advanced paddle design provides extra speed. The Bosch Expert SelfCut Speed flat router bit is equally suitable for softwood boards, coarse chipboard or particle board. It offers craftsmen efficiency and convenience when they need to drill through holes or blind holes to install cables, plugs or other hardware. Hexagonal shank for maximum power transmission in standard drill chucks and hexagonal screwdriver chucks. Diameter (D) mm: 30.00, Overall length (L2) mm: 152, Shank diameter (d) inch: 1/4