【Multipurpose】10Pcs set of the most popular assortment for various DIY, automotive, and mechanical tasks. 【High Quality Material】Made of high quality carbon steel, making it suitable for DIY and daily repairing tasks. 【Durable】Heat treated and black oxide coated to withstand impact wrench vibrations and ensure longevity and rust resistance. 【Advanced Design with Wide Range of Sizes】Curved edges system to reduce corner round-off. Set includes commonly used sizes ranging from 8 to 24 mm, 78mm length. 【Convenient】Packed in a heavy-duty, blow-moulded, and organized carrying case for easy storage and portability.