The Dremel precision drill bit set (628) contains 7 drill bits for drilling into wood or soft metal. The different diameters included are 0,8 / 1,2 / 1,6 / 2,0 / 2,4 / 2,8 and 3,2 mm. Requires the 4486 Dremel Multi Chucks. Not compatible with the Dremel 4200 Weight(KG): 0.250