The park tool shop screwdriver set is a shop quality screwdriver designed for comfort and durability featuring dual density grips and heat treated tips and shafts park tool shop screwdriver set features dual density grips and heated treated vanadium tips and shafts includes two phillips cross head size 0 and 2 and two flat blade 3 and 6 mm screwdrivers covered by park tool39s legendary limited lifetime warranty set includes sd 0 sd 2 sd 3 sd 6