Wide-ranging micro-screw assortment, fits eyeglasses, watches, hand-held electronics & more * 18 sizes, diameter 1.1mm, 1.3mm; lengths 2.0mm to 6.0mm * Includes machine-type metal screws and self-threading screws for wood, plastic & composites * All have preferred Phillips head - easier to turn with precision screwdrivers * Must-have set for repair & hobby, use just once and set can pay for itself in time & effort saved