Optimized for use with 1" drive impact wrenches, and adaptersStamped and ink filled diameter markings for wear resistanceIncludes a mix of thin wall extra deep, deep and standard sockets ideal for heavy equipment maintenance and roadside serviceDual hole design and groove for easier attachmentMeets ASME Industry StandardsThe set includes both 6-Point and 4-Point sockets, designed with forged impact steel for durability in high torque applications backed by Milwaukee's Lifetime GuaranteeLifetime Guarantee covers impact sockets and extensions onlyNon-slip hex geometry to prevent socket and fastener roundingSet comes in a Packout™ Compact Organizer for easy transportIncludes a removable tray for easy storage in tool chestsLaser etched part number