The Sunex 8845 3/8 in. Drive Master Spark Plug Socket Set includes various sockets suited for common spark plug sizes in most vehicles. Each socket is made with Cr-V and designed with radius corners and rubber grommets. All of this ensures our sockets' professional-level performance and increased torque strength--conveniently stored in one heavy-duty， storage case. Warning: Use of this socket with an impact tool can cause serious injury.

Includes common spark plug sizes compatible with most vehicles

Radius corner design reduces wear and increases torque on fasteners by placing force on fastener walls rather than fastener corners

Rubber grommet is designed to cling to the spark plug porcelain and hold onto the socket terminal， holding the plug inside of the socket while it is maneuvered into position

Cr-V material provides durability for long-lasting use

Comes in a convenient， heavy duty storage case for transport and storage

Lifetime Warranty with SUNEXpress