Klein Tools 66031 3-in-1 Slotted Impact Socket – 3/4 and 9/16 Hex, 1/2 Drive

One Socket, Multiple Sizing, Maximum Efficiency

The Klein Tools 66031 3-in-1 Slotted Impact Socket is designed to streamline clamp work and pole hardware tasks. It features an alignment slot that helps guide fasteners, a coaxial spring-loaded mechanism for smooth action, and a single handle-free transition between sizes. The 3/4 in and 9/16 in hex options sit inside a high-torque, 12-point geometry, making it easier to engage square fasteners in tight spaces. This tool is built to be used with an impact driver, which adds to its performance in demanding environments.

The feel of this socket in your hand is robust yet precise: solid metal, a comfortable grip, and the satisfaction of a tool purpose-built for professional use. The key benefit is the reduction in time spent swapping sockets and aligning fasteners, thanks to the alignment slot and the two hex sizes in one tool. The 12-point design enhances compatibility with square fasteners, improving bite and control when torque is high. The patent-pending design embodies Klein Tools' long history of careful engineering and quality materials.

Key design features

• Alignment slot to tighten and loosen hot-line clamps with less fiddling
• Hands-free size adjustment between 3/4 in and 9/16 in hex in a single socket
• Two common hex sizes in one tool for efficient field work
• High-torque 12-Point design for reliable engagement with square fasteners
• Coaxial spring-loaded mechanism for quick, consistent action
• Patent-pending concept and rugged construction for tough job sites

Practical advantages on the job

• Speeds up clamp work and pole hardware installation or removal
• Improves alignment in tight spaces, reducing misfit risks
• Offers precise control and torque delivery in heavy-duty tasks
• Compact, durable design travels well in service vans and on-site

Backed by Klein Tools' legacy as an American, family-owned company, this socket represents a commitment to delivering professional-grade tools designed to perform under real-world conditions. Built to endure daily use, the 3-in-1 socket is a versatile addition to any toolkit, designed to help you work more efficiently and with confidence.