Designed for attaching rafters or on-roof insulation systems, these SPAX wood screws feature the exclusive Wirox surface for enhanced durability. The flat head design offers higher pulling force, while the T-Star Plus T50 bit with guide pins ensures optimum power transmission and a clear fitting. These screws facilitate effortless work and extend battery life by eliminating the need for pre-drilling in most wood types. Penetration is made easy and the gap effect is reduced by the 4CUT feature, which provides four edges at the screw tip. Made in Germany and TUV certified, they are approved for use in wood connecting medium in load-bearing wood constructions (ETA-12/0114). Each box contains 50 SPAX wood assembly screws with a T-Star Plus plate head, partial thread, 4CUT Wirox surface, Diameter D1 = 10 mm x Ls 100 mm, LgV = 80 mm, diameter dk = 25 mm. Bit not included.