Lisle 33870 3/8" Drive 4mm Metric Hex Bit Socket

The Lisle 33870 is a professional-grade 3/8" drive hex bit socket designed for working with 4mm metric hex fasteners. This high-quality tool features a heat-treated alloy steel hex bit that is securely broached directly into a chrome-plated socket body, eliminating the need for set screws and ensuring the bit stays firmly in place during use.

Key Features:

• High-strength, heat-treated alloy steel construction for durability and long service life
• Hex bit is securely broached into chrome-plated socket - no set screws to loosen or tighten
• 3/8" square drive fits standard ratchets, breaker bars, and extension bars
• 4mm metric hex bit size for precise fitment
• Chrome-plated finish resists corrosion and allows for easy cleaning
• Individual replacement bit for Lisle 33850 7-piece metric hex bit set

This socket combines the convenience of a standard socket with the functionality of a hex bit driver, making it ideal for accessing recessed hex fasteners commonly found in automotive, motorcycle, marine, and industrial applications. The broached design provides superior strength and eliminates the frustration of bits that can slip or fall out during use.