Precision Allen key assortment, 7-piece for hexagon socket screws. The optimal tools especially for the smallest screws in electronic and electrical components, radio and stereo systems, telephone systems and all communication connections, for precision mechanics, electronics, model making and similar fine-sensory work, blades made of special steel, color coding ring to identify the screw system, for hexagon socket screws: SW 0.7x40 mm, L: 140 mm (-Article No.: 11 1910), SW 0.9x40 mm, L: 140 mm (-Article No.: 11 1911), SW 1.3x40 mm, L: 140 mm (-Article No.: 11 1912), SW 1.5x50 mm, L: 150 mm (-Article No.: 11 1913), SW 2.0x50 mm, L: 150 mm (-Article no.: 11 1914), SW 2.5x60 mm, L: 160 mm (-Article no.: 11 1915), SW 3.0x60 mm, L: 160 mm (-Article no.: 11 1916)