Klein Tools 653QS set open in its MODbox case displaying three 4-in-1 Quad sockets covering 1/4 to 1 inch SAE sizes with impact extension shafts.
Diagram showing the Klein 653QS Quad socket features, highlighting how four SAE nut driver sizes are integrated into one impact-rated body.
Diagram demonstrating the internal spring mechanism of the Klein Quad socket compressing under bolt pressure to instantly access larger sizes.
Diagram detailing all 6 pieces of the Klein 653QS set, showing 12 SAE sizes across 3 sockets alongside 3.5 and 6.5-inch extension shafts.
Diagram illustrating how two Klein Quad sockets stack inline on a single 1/4-inch hex shaft to provide quick access to eight SAE hex sizes.
Power impact driver fitted with a Klein 653QS impact-rated 4-in-1 Quad socket shaft for high-torque industrial fastener driving.
How A Quad Socket Works (651QS, 652QS, 653QS, 654QS and 656QS) Promotional video
Klein Tools 653QS set open in its MODbox case displaying three 4-in-1 Quad sockets covering 1/4 to 1 inch SAE sizes with impact extension shafts.
Diagram showing the Klein 653QS Quad socket features, highlighting how four SAE nut driver sizes are integrated into one impact-rated body.
Diagram demonstrating the internal spring mechanism of the Klein Quad socket compressing under bolt pressure to instantly access larger sizes.
Diagram detailing all 6 pieces of the Klein 653QS set, showing 12 SAE sizes across 3 sockets alongside 3.5 and 6.5-inch extension shafts.
Diagram illustrating how two Klein Quad sockets stack inline on a single 1/4-inch hex shaft to provide quick access to eight SAE hex sizes.
Power impact driver fitted with a Klein 653QS impact-rated 4-in-1 Quad socket shaft for high-torque industrial fastener driving.
How A Quad Socket Works (651QS, 652QS, 653QS, 654QS and 656QS) Promotional video
KLEIN TOOLS

Klein Tools Flip Socket Set 653QS KNECT 6 Piece SAE Quad 12 Deep Well (1/4 to 1 In 12 Size Range MODbox Case Dual Drive Impact Wrench Kit)

Only 2 left
SKU: 653QS
$59.98 USD

Description

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Klein Tools 653QS KNECT Quad-12 SAE 6-Piece Heavy-Duty Impact Flip Socket Set

The Klein Tools 653QS KNECT Quad-12 6-Piece Impact Flip Socket Set operates as a 4-in-1 multi-drive socket system engineered to install and remove 12 SAE hex fastener sizes across utility, industrial, and electrical installations. Weighing 2.12 lbs. and organized in a MODbox-compatible storage case measuring 6-97/100 in. L x 3-7/10 in. W x 1-4/5 in. H, this kit contains three 4-in-1 color-coded spring-loaded sockets covering small (1/4, 5/16, 3/8, 7/16 in.), medium (1/2, 9/16, 5/8, 11/16 in.), and large (3/4, 13/16, 7/8, 1 in.) ranges alongside an extended 1/4 in. hex flip shaft and a 3/8 in. square drive adapter. Outfitted with heat-treated cold-forged impact steel metallurgy, this set enables electricians, HVAC technicians, and utility line workers to transition deep-well sockets between 3/8 in. square drive ratchets, KNECT pass-through wrenches, and 1/4 in. power impact drivers.

Best Used For:

  • 12-Size SAE Utility & Mechanical Fastening: Driving hex nuts and lag bolts from 1/4 in. up to 1 in. using three 4-in-1 quad sockets to dramatically cut pouch weight.
  • Hands-Free On-Fastener Size Switching: Applying forward axial pressure against a fastener head to spring-compress smaller inner socket profiles out of the way automatically.
  • Impact Driver to Ratchet Dual-Drive Workflows: Stacking quad sockets onto the 1/4 in. hex shaft or 3/8 in. square drive adapter for rapid shifting between power impact tools and manual hand ratchets.

Key Performance & Safety Features

  • 3 Quad-12 4-in-1 Spring-Loaded Sockets: Combines 12 standard SAE sizes into three color-coded socket bodies with hands-free spring-compression mechanics.
  • High-Torque Cold-Forged Steel Metallurgy: Heat-treated impact-rated steel construction endures intense rotational torque and continuous impact driver hammering without cracking.
  • Dual-Drive Adapter System: Connects to 1/4 in. quick-connect impact shafts, Klein KNECT pass-through socket wrenches, and standard 3/8 in. square drive ratchets.
  • Pre-Stackable 8-Size Shaft Setup: Small and medium quad sockets stack together on the long 1/4 in. hex shaft to instantly yield eight hex sizes without detaching tools.
  • Deep-Well Extended Thread Clearance: Extended socket cavity housing easily reaches over long protruding studs, recessed framing bolts, and electrical box hardware.
  • MODbox Modular Storage Case Integration: Compact hard-shell organizer with a transparent lid docks onto Klein MODbox side rails and stacks with matching accessory cases.

What's Included

  • (1) Small Quad Socket (1/4 in., 5/16 in., 3/8 in., 7/16 in.)
  • (1) Medium Quad Socket (1/2 in., 9/16 in., 5/8 in., 11/16 in.)
  • (1) Large Quad Socket (3/4 in., 13/16 in., 7/8 in., 1 in.)
  • (1) Extended 1/4 in. Hex Quick-Connect Flip Socket Shaft
  • (1) Specialized 3/8 in. Square Drive KNECT Adapter
  • (1) MODbox™ Compatible Clear-Lid Compact Storage Case

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 653QS
Tool Set Classification Type 6-Piece Quad-12 Heavy-Duty SAE Impact Flip Socket Set
System Compatibility Platform Klein KNECT™ (M) System & MODbox™ Storage Cases
Total Fastener Output Capacities 12 Standard SAE Hex Sizes (6-Point Geometry)
Included Small Socket Range 1/4 in., 5/16 in., 3/8 in., 7/16 in.
Included Medium Socket Range 1/2 in., 9/16 in., 5/8 in., 11/16 in.
Included Large Socket Range 3/4 in., 13/16 in., 7/8 in., 1 in.
Drive System Interface Sizes 1/4 in. Hex Quick-Connect Shank & 3/8 in. Square Drive Adapter
Socket Mechanics Architecture 4-in-1 Coaxial Spring-Loaded Action Socket Bodies
Socket & Shaft Metallurgy Cold-Forged Heat-Treated Alloy Impact Steel
Manufacturing Quality Standards ASME B107.2 Compliant Specifications
High-Voltage Insulated Frame No (Uninsulated - do not use on live electrical circuits)
Total Piece Count in Kit 6 Pieces (Providing 12 Socket Sizes)
Overall Storage Case Dimensions (L x W x H) 6-97/100 in. L x 3-7/10 in. W x 1-4/5 in. H (17.7 x 9.4 x 4.6 cm)
Assembled Net Package Weight 2-3/20 lbs. (2.12 lbs.)
Global Trade Item Number GTIN 00092644380143

Pro-Tip: When working on utility hardware or heavy framing where fastener sizes vary, mount both the small and medium Quad sockets onto the extended 1/4 in. hex shaft at the same time. Push the impact driver directly over smaller nuts to compress the top socket down, giving you access to 8 distinct SAE sizes (1/4 in. through 11/16 in.) without ever touching the bit chuck.