SIZE INCLUDES: TT9, TT10, TT15, TT20, TT25, TT27, TT30, TT40.        
PREMIUM MATERIAL - Premium S2 steel with shock-resistance heat treated for enhanced strength, maximum torque and lasting durability to avoid breakage.        
TAMPER-PROOF DESIGN – With drilled security tips, you can use on tamper-resistant security screws.        
PRECISE FIT - Adopting precision machining, these Torx star key wrenches provide an exact fit in screws and fasteners.        
INCLUDED CARRYING CASE – Comes with a carrying case with convenient hinged design makes it's easier to carry and store. Size stamped on the case to ensure quick identification of the right one.