MDT934N – TengTools Power Through Screwdriver – Flat Head Screwdrivers with power through shaft made of TT-MV PLUS steel and with percussion cap. The hexagonal blade allows tightening using an open ended spanner. Ergonomically designed two component handle. DIN 5264 Driver Thickness x Width: 1.2 x 8mm Blade Length: 150mm Handle Length: 125mm