Stanley fatmax tamperproof torx screwdriver set of 6 stanley 0 65 099 this stanley fatmax 6 piece tamperproof torx screwdriver set comprises the following li 1 x tt10 x 75mm li 1 x tt15 x 75mm li 1 x tt20 x 100mm li 1 x tt25 x 100mm li 1 x tt30 x 115mm li 1 x tt40 x 130mm li 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 h