19-piece metric High-Speed Steel (HSS) twist drill bit set housed in a plastic storage case.Size Range: The set includes bits ranging from \(1.0\text{mm}\) to \(10.0\text{mm}\) in \(0.5\text{mm}\) increments.Material: The drill bits are made from High-Speed Steel (HSS), which is designed for general-purpose drilling in materials like metal, wood, and plastic.Storage: The bits are organized in a labeled plastic indexing case for easy identification and access.