GearWrench 1/2 Inch Drive 6 Point Standard Metric Socket 21mm

Features and Benefits:

• Full polish nickel chrome plated
• Turn down at base provides grip surface to pull sockets off ratchets
• Knurled line to easily identify metric sockets
• Large hand stamped identification
• Surface Drive® technology

Entry angle guides fastener. Serration depth as deep as the fastener holds fastener for ease of access.