Use: for fixing rafters or roof insulation systems. Spax exclusive Wirox surface Higher head pulling forces thanks to plate head. Optimum power transmission and clean fit with SPAX bit T-Star plus T50 with guide pins Effortless work and longer battery life: no pre-drilling (depending on the wood). Easy penetration, reduction of the splitting effect thanks to 4CUT: Four edges in the screw tip. Made in Germany – approved by building authorities: European technical approval for screws as wood fasteners in load-bearing wooden constructions (ETA-12/0114)
Amazon MarketplaceLength indication and manufacturer's mark on the head Use: Timber construction Higher tightening torques compared to countersunk head screw Fastening of slats & squared timbers (e.g. secure fastening of roof battens)