Features: 7-pieces hex bit sockets with 3/4/5/6/7/8/10 mm drive. Precise bits to ensure accurate size. Extra long 110mm shaft for hard to reach areas that conventional bits cannot reach, more convenient. Manufactured from chrome-vanadium steel with heat treated for extra strength and durability. Each bit has its size imprinted on the bit itself, making it easy to identify them after you've removed a handful from the case. All parts are well packed and assorted in a plastic box for convenient storage and carry, meeting your different needs for all kinds of repair work. Hardened and tempered, professional tool for commercial or occasional use. Useful tool kit for automobile repair and maintenance. Specifications: Material: Chrome Vanadium Steel Item Color: Silver Storage Box Color: Blue Socket Length: 110mm/3.9in Socket Size: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm Package Weight: approx.610g Package List: 7 * Hex Bit Sockets 1 * Plastic Case Note Please note that the new type and old type of this product will be sent randomly, and make sure that you will not mind before ordering. Package List 17-pieces hex bit sockets with 3/4/5/6/7/8/10 mm drive. Precise bits to ensure accurate size 2Extra long 110mm shaft for hard to reach areas that conventional bits cannot reach, more convenient 3Manufactured from chrome-vanadium steel with heat treated for extra strength and durability 4Each bit has its size imprinted on the bit itself, making it easy to identify them after you've removed a handful from the case 5All parts are well packed and assorted in a plastic box for convenient storage and carry, meeting your different needs for all kinds of repair work