Contains: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm and 10mm long hex keys. Packaged in compact molded plastic holders. Designed with a ball profile on the long arm. This feature provides 360º of rotation at up to a 30º angle. The burr-free short arm allows the user to apply the maximum torque in required applications.