Specification: Model: D99852 Product Name: Deep Impact Socket Color:Black Overall size(approx.):80mm/3.1"(L) Select your preferred size:38mm available. (Please let us know the SIZE you’d like.You can LEAVE THE EMAIL ON YOUR PAYPAL NOTE to tell us. Otherwise we’ll send them at random.) Material:Chrome vanadium steel Drive Size:1/2in Qty: 1pc Features: 1.100% Brand new and high quality. 2.It is durable and convenient. 3.Simple design and easy to use. 4.1/2"Drive and 12 Point (Hex). 5.Designed for use with air impact wrenches. Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit.Professional Installation Is Highly Recommended! 4.No Instructions Included.Professional Installation Is Highly Recommended!