21-Piece 1" Drive SAE 6-Point Impact Socket Set by Grey Pneumatic®. Grey Pneumatic Sockets are designed with increased strength, increased torque, easier access to tight areas and reduced wear. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost. SPECIFICATIONS: Made of high quality steel (chrome-molybdenum); thorough and exact heat treatment insures the correct balance of strength and durability Engineered specifically for use with impact tools, using the most up to date industrial specifications Made to transfer the pressure from the thinnest part of the socket wall toward the thicker section, resulting in increased strength Packaged in a metal case Lifetime Warranty *Due to Size and Weight this item does not qualify for Free Shipping. Please call the store at 816-452-7873 for shipping cost and estimated delivery date. Available for Local Pickup* WARNING: Cancer & Reproductive harm www.P65Warnings.ca.gov