Sizes: 1.5, 2, 2.5mm x 146mm long; 3, 4, 5mm x 170mm long. Ideal for use on radio controlled cars, boats, aeroplanes & small electronic equipment fixings. Durable ABS handles. Manufactured from chrome vanadium with black passivated finish. Other micro tools also available. Please see Part No.7265 (spanners) & 2419 (precision screwdrivers).