"Metric Sets Manufactured from fully hardened carbon steel in accordance with DIN 911. A quality ductile key with precision cut ends and accurate AF dimensional to ensure maximum socket contact. Ball end allows up to 30° work offset. Long arm end is ball drive and short arm end plain. Black oxidised finish. Metric 7 Piece Set Contents: 1.5, 2, 2.5, 3, 4, 5 and 6mm. Metric 9 Piece Set Contents: 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10mm. Supplied in a plastic storage clip. • Tip Material Steel • Number of Pieces 9 • Tip Type Hex Ball • Standards Met DIN 911 • Tip Size 1.5"