9-piece Allen kit in professional quality, ideal for workshop use, or the home mechanic. High strength super hard chrome vanadium steel with durable chrome finish The holder can be opened with integrated hanging holes for easy access. Contains 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10mm L-shaped bits with a spherical tip. Each bit is precision made for the best quality and tolerance.