Klein Tools Impact Flip Socket Set 6513QS 2 Piece Quad 4 (3/8 Inch Drive 4 in 1 SAE Spring Loaded Cold Forged Steel Hex Hardware Fastening)

Klein Tools 6513QS KNECT™ Quad-4 4-in-1 Coaxial Heavy-Duty Impact Flip Socket Set

The Klein Tools 6513QS KNECT™ Quad-4 Impact Flip Socket Set consolidates four primary SAE hex drive sizes into a single coaxial, spring-loaded 3/8-inch drive socket and multi-purpose KNECT™ (M) adapter system. Forged from high-strength heat-treated cold-forged steel with a protective black manganese phosphate finish, this 2.7 oz dual-ended socket measures 4.48 inches high by 1.36 inches wide to deliver maximum torque in deep-reach applications. Designed for utility workers, commercial electricians, and steel erectors, the hands-free spring-loaded socket mechanism lets operators press inner socket walls directly over hex heads to transition across 3/4-inch, 13/16-inch, 7/8-inch, and 1-inch sizes without detaching the socket body from impact drivers or KNECT™ pass-through ratchets.

Best Used For:

• Pole-Line & Overhead Utility Fastening: Driving heavy structural lag screws and utility pole hardware across four large SAE hex sizes without changing drive extensions.
• Deep-Recessed Fastener Access: Accessing buried nuts and extended threaded rods in tight enclosure bays using a deep-well coaxial socket profile.
• Modular KNECT System Integration: Operating seamlessly with KNECT™ (M) pass-through socket wrenches or 3/8-inch square impact drivers for high-torque mechanical bolting.

Key Performance & Safety Features

• 4-in-1 Quad-4 Coaxial Socket Geometry: Combines 3/4-inch, 13/16-inch, 7/8-inch, and 1-inch SAE hex sizes into one dual-ended reversible socket body.
• Hands-Free Spring-Loaded Action: Inner spring-loaded socket retracts under pressure, allowing immediate transition to secondary hex sizes without manual swapping.
• Heat-Treated Cold-Forged Steel Body: Premium alloy steel metallurgy absorbs intense rotational shock loads from high-torque impact wrenches.
• Black Manganese Phosphate Finish: Industrial surface treatment guards steel surfaces against moisture oxidation, jobsite fluids, and surface abrasion.
• Multi-Purpose KNECT (M) System Adapter: Included adapter connects directly to KNECT™ pass-through handles and standard 3/8-inch square drive power anvils.
• Industry-Standard Color-Coded Rings: High-visibility painted color rings enable immediate visual identification of specific hex drive dimensions.

What's Included

• (1) Klein Tools Quad-4 Coaxial Reversible 4-in-1 Heavy-Duty Impact Flip Socket (3/4", 13/16", 7/8", 1")
• (1) KNECT™ (M) System Multi-Purpose Drive Adapter

Technical Specifications

Pro-Tip: To drive 3/4-inch or 13/16-inch hardware, push the tool firmly onto the bolt head so the internal spring compresses fully. For larger 7/8-inch or 1-inch hardware, pull the socket body outward or flip the sleeve around to engage the outer socket profile directly without depressing internal springs.