Proto J72105M Impact Socket Set 12 Pc 3/4 Drive Metric

Product Description

The PROTO J72105M is a 12-piece metric impact socket set built for heavy-duty fastener work with a 3/4 inch drive. Each socket is forged from steel and features a 6-point design that delivers maximum contact with fastener flats, reducing the risk of rounding under high torque. The set covers sizes from 19mm to 46mm, making it well suited for large fasteners found in industrial, mechanical, and heavy equipment applications. This set is rated for impact tool use and carries a lifetime warranty, reflecting the durability expected from a professional-grade hand tool. Licensed tradespeople and mechanics working in demanding environments will find this range of sizes covers most large-format metric fastener work.

This socket set is designed for use with 3/4 inch drive impact wrenches and ratchets in applications where metric fasteners in the 19mm to 46mm range are common. Typical install and service scenarios include heavy equipment maintenance, industrial machinery, commercial HVAC compressor and condenser service, large-format plumbing fixture work, and structural mechanical assemblies. The 6-point socket geometry is particularly valuable when working with worn or tight fasteners, as it grips on the flat faces rather than the corners.

Key Features

• 12-piece metric set covering 19mm to 46mm in a single kit
• 3/4 inch drive compatible with standard impact wrenches and ratchets
• 6-point design maximizes torque transfer and reduces fastener rounding
• Steel construction rated for impact tool use
• Lifetime warranty on the full set
• Metric sizing for use with metric fasteners across heavy equipment and industrial applications

Compatibility

Designed for use with 3/4 inch drive impact wrenches, air wrenches, and ratchets that accept standard 3/4 inch drive square-drive sockets. Compatible with metric fasteners ranging from 19mm to 46mm across point size.

Installation Notes

Sockets should be seated fully on the drive tool anvil before applying torque. Always ensure the fastener and socket size match before engaging an impact wrench to avoid fastener or socket damage. Inspect sockets for cracks or deformation before each use, and remove from service any socket showing signs of wear or cracking. Impact sockets are not rated for use with torque multipliers or breaker bars unless otherwise specified by the manufacturer.