Made of chrome vanadium steel which is hardened and tempered for added durability and strength
Comes in a metal carrying case for convenience and ease of carrying around 
This set consists of the following: 
2x Bit adapters - 1/2" Dr, 3/8" Dr
7x 30 mm Hex - 4, 5, 6, 7, 8, 10, 12 mm
7x 75 mm Hex - 4, 5, 6, 7, 8, 10, 12 mm
7x 30 mm Star - T20, T25, T30, T40, T45, T50, T55
7x 35 mm Star - T20, T25, T30, T40, T45, T50, T55
5x 30 mm Spline Bits - M5, M6, M8, M10, M12
5x 75 mm Spline Bits - M5, M6, M8, M10, M12