Lightweight anodized aluminum body and chrome vanadium steel construction for strength and durability. Ball end on hex keys allow use at angles up to 25 degrees for obstructed areas. Star keys work on regular and tamper proof star fasteners. Keys conveniently fold for compact easy storage. Coded in high visibility colors for easy identification. SAE hex key sizes: 1/16, 5/64, 3/32, 1/8, 9/64, 5/32, 3/16 and 1/4". Metric hex key sizes: 1.5, 2, 2.5, 3, 4, 5, 6 and 8mm. Star key sizes: T9, T10, T15, T20, T25, T27, T30 and T40.