Product Description Bits for special chainring nuts. The Chainringr Pliers are required for using the bit. Compatibility: chainring mounting pliers Models:Bit-A: Size: 1 mmType: tappet, continualCompatibility: CampagnoloManufacturer Number: 720322 Bit-B: Size: 2 mmType: 2 tappetsCompatibility: MicheManufacturer Number: 720323 Bit-C: Size: 5 mmType: hexCompatibility: TruvativManufacturer Number: 720324 Bit-D: Size: 1.5 mmType: 2 tappetsCompatibility: Shimano, TruvativManufacturer Number: 720325 Bit-E: Size: 1 mmType: 2 tappetsCompatibility: Campagnolo, Sugino, SRAM, FSAManufacturer Number: 720326 Note: When assembling / disassembling chainring bolts, make sure that the drivers are positively seated in the groove. Contents:1 x Cyclus Tools bit Manufacturer: Cyclus Tools Julius-Kruttschnitt-Str. 55 53129 Bonn Germany info@cyclus-tools.eu