Features:Heat treatment of chrome vanadium steel screwdriver handle, durable and high-end.Carbon steel heat treatment tool rod.Light and easy to carry, complete in specifications.Perfect for working for watch and clock.Quality packing box and with magnetic screwdrivers. Specifications:Color: SilverMaterial: Chrome Vanadium SteelModel:Straight: 1.0mm, 1.2mm, 1.6mmCross: NO.00, NO.0, NO.1Item Size: Approx 10.5 * 1.1cm / 4.1 * 0.4in (L * D)Item Weight: Approx 3.7-15.4g / 0.1-0.5oz (1 PC)Package Size: 15.5 * 8.7 * 1.6cm / 6.1 * 3.4 * 0.6inPackage Weight: 93g / 3.3oz