This is a Flex Tight bracket from CATEYE (CatEye). It is a new, unused item. [CATEYE (CatEye) H-34N Flex Tight Bracket] Compatible models: Stadium 3 (HL-EL930RC) / Stadium 2 (HL-EL920RC) / Volt Neo series (HL-EL465RC/HL-EL475RC) / Volt series (HL-EL10101RC/HL-EL1000RC/HL-EL471RC/HL-EL470RC/HL-EL461RC/HL-EL460RC/HL-EL151RC/HL-EL150RC) / Nano Shot Plus (HL-EL625RC) / Nano Shot (HL-EL620RC) / Econom Force (HL-EL540RC/HL-EL540) / Econom (HL-EL340RC/HL-EL340) / Inou (MSC-GC100) / Uno (HL-EL010) / Jido (HL-AU230) / HL-EL135 / HL-EL140 / Keen (HL-EL370) / AMPP series (HL-EL083RC/HL-EL085RC/HL-EL088RC/HL-EL1100RC) Compatible pipe diameter: Approximately φ22.0～32.0mm