Features and Benefits:Complete 3/8″ drive size coverageForged from CR-MO alloy steelBacked by Sunex Tools® Lifetime WarrantyBlow molded storage case 3342, 42-Piece 3/8 in.; Drive, Impact Socket Master Set, includes metric and fractional impact sockets in standard and deep lengths as well as a universal joint and 3 in.; extension for those difficult to reach fasteners. With fractional impact sockets ranging from 5/16 in.; ?3/4 in.; and metric impact sockets from 8mm ?19mm in standard and deep lengths, the 3342 from Sunex Tools is the perfect blend of fastener solutions and value. WARNING: This product can expose you to Nickel (Metallic) a chemical known to the State of California to cause Cancer. For more information go to www.P65Warnings.ca.gov.