1、HIGH ACCURACY OPERATION: Hex screw driver bit has an accuracy engineered design allows for high accuracy operations, enabling accurate tightening of various screws. 2、13PCS SET: The set includes 12 different sizes of ball end hex screwdriver bits and a wrench, catering to a wide range of repair and maintenance needs. 3、HIGH EFFICIENCY: The ball end design of the screwdriver bit provides flexibility and enhanced access in tight spaces, making your tasks more efficient and convenient. 4、S2 ALLOY STEEL MATERIAL: Crafted from premium S2 alloy steel, these ball end screwdriver bits ensure exceptional durability for long term use. 5、NECESSARY TOOL: Whether you're a professionals or a DIY enthusiast, this versatile set is a must have tool for your toolbox, offering reliability and performance like no other.