14Pcs Power Nut Driver Drill Bit Kit, Non-Magnetic! !1/4 inch; shank fits most electric corded or cordless drills, sturdy hexagon socket hexagonal shank length: . 2.2 cm, shank diameter: 1/4 inch (6.35 mm). The set includes 7 metric socket wrench sizes (5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm, and 12mm) and 7 SAE sizes (3/16 inch;, 1/4 inch;, 9/32 inch;, 5/16 inch;, 11/32 inch;, 3/8 inch;, and 7/16 inch;). Widely used in home doing, auto parts, woodworking, professional machine. Fits drills with 1/4-inch hex shanks. The bits are also easy to remove and put back on the quick connect. Great solution for carrying the bits you need/use the most. perfect for replacing a variety of drill bits, screwdrivers and more. The 1/4 inch hex shank is compatible with a variety of power screwdrivers, handheld screwdrivers and drills. It can also be used as a keychain. The bit socket adapter is made of aluminum alloy for durability, and sturdy enough to carry around.6 Hexagon Screwdriver Bit Holder Extensions