This Bosch 1600A01TH4 is a 9-piece torx key set created from S2 hardened steel. These are ideal for when you need to reach into tighter spaces and are a great length to allow for extra leverage which makes them suitable for both professional and DIY jobs. Features and Benefits Robust design High convenience with comfortable length that gives additional leverage Specifications Bosch Part Number: 1600A01TH4 Sizes: T10, T15, T20, T25, T27, T30, T40, T45 and T50 Contents 9 x Torx Keys.