This stanley fat max 6 piece tamperproof torx screwdriver set comprises the following 1 x tt10 x 75mm 1 x tt15 x 75mm 1 x tt20 x 100mm 1 x tt25 x 100mm 1 x tt30 x 115mm 1 x tt40 x 130mm the screwdrivers have large diameter handles offering a high torque required for driving wood screws in addition the chrome vanadium steel bars allow for high torque and reduce the chance of tip breakage the handles are moulded directly to the bars to form a virtually unbreakable bond resulting in highly reliable