The E-Z Red Super Low Profile Wrench Drive Torx Set, No. T1000, fits on any 10mm, 12mm, and 17mm wrench. The ball detent and bottoming shelf securely holds the bit into the drive wrench and the low-profile design allows the user to reach into confined area’s to remove fasteners. This 12-piece kit comes in a blow-molded case for easy storage. Bit sizes: T10, T15, T20, T25, T27, T30, T40, T45, T47, T50, T55, T60a.