Grey Pneumatic 904MS Drive Metric Standard Impact Socket - 1/4 4mm

The Grey Pneumatic 904MS is a 1/4-inch drive 4mm metric standard length impact socket featuring their proprietary Surface Drive technology. This innovative design transfers torque through the socket's flatter side walls rather than the corners of the fastener, reducing wear and allowing up to 20% more torque than traditional hex impact sockets.

Key Features:

• 1/4-inch drive size with 4mm metric socket opening
• Surface Drive technology protects fastener corners and increases socket strength
• Constructed from premium chrome-molybdenum steel for optimal strength and durability
• Precision heat-treated to exact specifications for long-lasting performance
• Engineered specifically for high-impact pneumatic and cordless tools
• Allows easier access to fasteners in tight, confined spaces
• Backed by Grey Pneumatic's lifetime warranty

Each Grey Pneumatic socket undergoes rigorous testing to meet the highest industrial standards, delivering professional-grade performance and reliability. The Surface Drive system minimizes fastener rounding and extends socket life, making this an essential addition to any professional or serious DIY mechanic's tool collection.