Wera Kraftform 977 Torx Chisel Driver TX20 x 90mm WER024401 The Wera 977 series rugged Torx tipped Chiseldriver has been designed to be hit with a hammer, whilst remaining fully useable as a screwdriver, with impact cap and pound-thru hexagon blade. The blade is made from same bit-grade steel as all Wera products, and has a hexagonal profile for added strength, the hexagon bolster allows spanner leverage for increased torque.Size TX20 x 90mm WER024401