VIMHCTSD Features: -Half -Cut Torx increases strength and improves fastener engagement.-All drivers with tamper-proof holes for security fasteners.-Half-Cut TORX drivers, also drive TORX Plus.-S2 steel, the strongest hardest drivers heat treated to 58-6.-22 Piece Half-Cut Torx Security Drivers Set. Includes: -Satin Chrome plated drivers The Half-Cut Torx have the Torx Tip cut Shallower than normal Torx, this increases the strength, and makes fastener fit much tighter. This set includes the following: 12 piece Hal-Cut Torx stubby tamper proof security drivers, T8 - T60 and 10 piece 4" long Hal-Cut Torx tamper proof security drivers T8 - T50. All included in a durable plastic storage case and all have the limited lifetime warranty. . Warranty: -Lifetime warranty repair only.