Features： 1、Smart Driving: The impact socket can firmly clamp the fasteners, which can also easily change the force angle for quicker bolt and nut release. 2、 Steel: Adopting high strength high carbon steel material that is more than enough to withstand larger torsion, durable for longer use. 3、Great Coating: black phosphate coating provides maximum rust and corrosion protection, and greatly extends the service life as well. 4、Wider Utility: For mechanical installation and maintenance, can be used with bent rod wrench, ratchet wrench, electric wrench, pneumatic wrench. 5、Easy to Install: Light in weight and compact in size as well, the convenient installation can be quickly completed within minutes. Specification： Item Type: Impact Socket Material: High Carbon Steel Color: Black Application: Special for mechanical installation and maintenance, for auto repair and scaffolder, can be used with bent rod wrench, ratchet wrench, electric wrench, pneumatic wrench. Package List： 9 x Impact Socket