1.DURABILITY: These bits are made of a high-quality chrome vanadium steel for strong hardness that can withstand more torque, reduce wear-outs, ensure longevity, and durability! 2.PRECISION BITS: Each hex bit set is precisely and automatically machined built to ensure accurate size, chamfered bit ends insert smoothly into fasteners and protect both bits and fasteners from damaged edges and ensure a smooth rotation. 3.DRILL AND SCREWDRIVER BIT SET: Each security hex torx bit set has a sandblasted finish for optimum strength to use with your drill or impact driver. This square bit set includes Nut Drivers, Security Bits, Torx, Slotted, Phillips, Square, Pozi, Hex, Socket, and other specialty bits. 4.ORGANIZED STORAGE: Our small screwdriver bit set includes a sturdy plastic organizing case for secure storage and easy carrying for working on appliances, computers, electronics, home DIY projects and much more.