High Strength CR-V Construction ：1/2-inch impact socket set is made of heavy-duty chrome vanadium(CR-V) steel, processed by heat treatment and with a black phosphate coating, makes its high strength with anti-corrosion, anti-rust and wearproof ability. Thanks to its superior torque and durability, you will have a more powerful socket tool that will last longer.

6-Point Socket Design ：The 6-point socket design of 1/2" drive deep impact socket sets increases contact surface between sockets and bolts for less abrasion, provides superior torque to turn the most stubborn fasteners. The spring loaded ball detents and chamfered ends can keep the sockets firmly connected, you will never have a dropped socket again or rounded fastener corners.

Portable Compact Storage Case ：All sockets come with laser-etched markings, which allow you to easily identify the required size for your work. The customized storage boxes correspond to the size on the sockets, which is easy to identify and reinstall. Each box has a designated slot to make it difficult to fall off. This design can greatly reduces your working time and improves work efficiency.

20-PCS Metric Socket Set ：1/2" drive impact socket set contains 20 pieces metric deep impact sockets with metric size of 8mm, 9mm,10mm,11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm,27mm,30mm,32mm.