The GHA FC2 chuck adaptor is a unique power tool accessory which can be used to convert a Bosch Professional 18v Flexiclick drill driver into an SDS Plus rotary hammer drill. Features and Benefits • High flexibility: converts an 18v Flexiclick machine into an SDS Plus hammer drill • Effortless drilling in hard concrete thanks to a new impact mechanism • SDS Plus tool holder enables rapid bit changes Contents • GHA FC2 SDS Chuck • Auxiliary Handle