Specifications: Material: Chrome Vanadium Steel Quantity: 14 Pcs Shank: 1/4" (6.3mm) 7 Pcs SAE: 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16" 7 Pcs Metric: 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, 12mm Package Size: 9 * 7 * 2cm / 3.5 * 2.8 * 0.8in Package Weight: 220g / 7.8oz Package List: 1 * Power Nut Driver Bit Set