Hexagon keys with ball end on the long arm and conventional ends on short arm. The ball type hexagon tip allows the hexagon key to be used up to 30° ; angle from the screwhead recess. Manufactured from chrome vanadium steel that's hardened and tempered. Held in plastic storage holder. Contents: 10 x Hex keys: 1/16, 5/64, 3/32, 1/8, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8"