Strong and SturdyThe size of the sleeve driver is 1/2 inch,The impact sleeve tool is made of high-quality chromium-vanadium steel, heat-treated and forged, with the greatest rust and corrosion resistance, strong structure, and durability. It is the perfect tool for professional maintenance or DIY production. Advanced Design with Wide Range of Sizes Curved edges system to reduce corner round-off. Set includes commonly used sizes ranging from 10 to 24 mm Multipurpose 10-Pcs set of the most popular assortment for various DIY, automotive, and mechanical tasks Accurate SizeThe drive deep-drawing sleeve set has a highly recognizable laser-etched size mark, which can easily identify the drive specification and size, exquisite workmanship, high reliability, and can fully meet your needs, improve work efficiency, and bring a better Use experience. Specific Storage BoxAll parts are packed in a sturdy, compact suitcase, which is easy to store and carry. The designated slots on the dedicated storage box ensure that everything is in place and the sockets will not fall or slip off. The size is also printed next to each slot for identification. Size: Variety Pack Material: Chrome Vanadium Steel, Chrome Molybdenum Steel Finish type: Polished