The Grace USA Micro Screwdriver Set consists of three slotted micro screwdrivers with tip widths of 1/16", 5/64", 3/32" and three Phillips micro screwdrivers with #00, #000, and #0000 tips. Each screwdriver blade is hand assembled to the Grace USA "G" series small hardwood handle. Mfg: Grace Usa SPECS: USA Chromium-Vanadium 8650 Alloy Steel Blades. Black Oxide Blade. Nickel Plated Steel Ferrule. Hardwood handle turned in Maine.