Plastic Lined Lug Socket (21 mm).

Key Features:

• 21 mm Size: This indicates the socket is designed for 21 mm lug nuts, a common size for many vehicles.
• Impact Socket: The socket is made of a hardened steel alloy designed to withstand the high torque and impact forces of impact wrenches.
• Plastic Lining: The socket has a plastic sleeve and liner inside, which is crucial for protecting the finish of delicate wheels (especially mag wheels) from scratches and damage.

Function:

This socket is used to:

• Remove and Install Lug Nuts: The primary function is to loosen and tighten lug nuts on vehicle wheels.
• Protect Wheel Finish: The plastic lining prevents damage to the wheel's surface during lug nut removal or installation.