HEX KEYS LOCK INTO 3 POSITIONS: 90°, 135° AND 180°. LOCK PREVENTS SLIPPING AND CLOSING WHEN IN USE. BUTTON RELEASE FOR QUICK OPERATION. CHROME VANADIUM STEEL FOR MAXIMUM PERFORMANCE WITH ERGONOMIC SOFT GRIP HANDLE DESIGN FOR COMFORT. CONTAINS: 1.5, 2, 2.5, 3, 4, 5, 6 AND 8MM