KBOISHA 1/4 Inch Drive Master Impact Socket Set, 53-Piece CR-MO Alloy Steel Socket Set SAE and Metric From 3/16 Inch - 9/16 Inch and 4mm - 15mm Standard and Deep Sockets with Heavy Duty Storage Case

HIGH STRENGTH MATERIAL: KBOISHA industrial grade impact socket set adopt higher quality chrome-molybdenum steel(CR-MO). After heat treatment and forging, it has higher hardness and better toughness. Flexible for impact wrench and other high torque tools.
RADIUS CORNER DESIGN & CHAMFER OPENING: The 6-point rounded corner design increases the force exerted on the fastener wall to prevent the fastener corners from wearing. Effectively protect fasteners. The chamfering design can quickly insert the fastener into the socket. Improve work efficiency.
LONG SERVICE LIFE: The surface is black phosphate finish to prevent the socket from rusting, and corrosion resistant, extend the service life. Can remove fasteners at least ten thousand times.
DOUBLE SIZE MARK: The laser mark on the impact socket and the specification mark on the tool box make it easy to quickly identify the socket you need. It is suitable for the installation and repair of automobile, machinery, equipment and other products.
COMPLETE CONFIGURATION: Contains most of the sockets needed for repairs. Meet your daily needs. With a heavy toolbox, convenient to storage and carry. The workmanship exceeds ANSI standards. 20 x
SAE: Shallow
Sockets: 3/16, 7/32, 1/4, 9/32", 5/16", 11/32, 3/8", 7/16, 1/2", 9/16".
SAE Deep Sockets: 3/16, 7/32, 1/4, 9/32", 5/16", 11/32, 3/8", 7/16, 1/2", 9/16".
28 x METRIC: Shallow
Sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15mm.
Deep Sockets: 4, 4.5, 5, 5.5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15mm.
5 x OTHER ACCESSORIES: Extension Bar: 2, 4,
6.
Adapter: 1/4 to 3/8. 1/4 Universal Joint.