V-Cut Routers G30°N Type For Isolation routing and fine engraving, two flutes, 30° tip angle. For Channels of 0.1 – 0.3 mm width (depending on cutting depths). Contour Routers G60°N Type For Isolation routing with or for engraving. Two flutes, 60° tip angle. For Channels of 0.2 – 0.5 mm width (depending on cutting depths). High quality, precision ground solid carbide drill and routing bits with 3.175 mm(1/8”)shaft. All tools have 7.5 mm wide collets with a distance of 21 mm from the tip to the upper side of the collet. The tools show the diameter or are color coded and come in re-usable plastic boxes.