Klein Tools 654QS KNECT Quad-16 6-piece heavy-duty impact flip socket set organized inside an orange MODbox accessory case featuring color-coded sockets and impact shafts.
A single color-coded impact flip socket from the Klein Tools Quad-16 set showing four integrated sizes, impact-rated forged steel construction, and laser-etched markings for deep-well fastening.
Two-panel infographic demonstrating the quick-access spring mechanism of the Quad-16 impact flip socket, showing how applying pressure allows for an easy hands-free transition between small and large hex sizes.
Detailed view of the 654QS set contents including four 4-in-1 impact sockets covering 16 different SAE and metric sizes, plus 3.5-inch and 6.5-inch impact extensions.
Demonstration of the KNECT system versatility with multiple color-coded impact flip sockets stored on a single shaft to allow for rapid switching between eight different hex sizes on the job.
Action shot of a Klein Tools color-coded impact flip socket attached to a heavy-duty impact driver, highlighting the tool's impact-rated durability for high-torque fastening tasks.
How A Quad Socket Works (651QS, 652QS, 653QS, 654QS and 656QS) promotional video
Klein Tools 654QS KNECT Quad-16 6-piece heavy-duty impact flip socket set organized inside an orange MODbox accessory case featuring color-coded sockets and impact shafts.
A single color-coded impact flip socket from the Klein Tools Quad-16 set showing four integrated sizes, impact-rated forged steel construction, and laser-etched markings for deep-well fastening.
Two-panel infographic demonstrating the quick-access spring mechanism of the Quad-16 impact flip socket, showing how applying pressure allows for an easy hands-free transition between small and large hex sizes.
Detailed view of the 654QS set contents including four 4-in-1 impact sockets covering 16 different SAE and metric sizes, plus 3.5-inch and 6.5-inch impact extensions.
Demonstration of the KNECT system versatility with multiple color-coded impact flip sockets stored on a single shaft to allow for rapid switching between eight different hex sizes on the job.
Action shot of a Klein Tools color-coded impact flip socket attached to a heavy-duty impact driver, highlighting the tool's impact-rated durability for high-torque fastening tasks.
How A Quad Socket Works (651QS, 652QS, 653QS, 654QS and 656QS) promotional video
KLEIN TOOLS

Klein Tools Flip Socket Set 654QS 16-in-1 KNECT Quad (6 Piece Heavy Duty Deep Well Set Color Coded Multi-Drive Impact Automotive Electrical Fastening)

In stock
SKU: 654QS
$69.98 USD

Description

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Professional 16-in-1 Deep Well Impact Rated Flip Socket System

The Klein Tools 654QS KNECT™ Quad-16 is a heavy-duty 6-piece impact flip socket set engineered to consolidate 16 independent SAE and metric hex sizes into four color-coded deep-well sockets. Featuring an innovative spring-loaded structural mechanism, this system allows hands-free compressed size switching without manual tool swaps, providing deep clearance and extended thread access for high-torque fastening applications with standard impact drivers or 3/8-inch ratchets.

Best Used For:

  • Electrical Conduit Fastening: Running multi-size hex hardware over long threaded rods and recessed bolts inside industrial control cabinets.
  • Mechanical HVAC Assembly: Rapidly transitioning between fractional and metric bolts on commercial ventilation frames and compressor housing units.
  • Automotive Support Service: Utilizing deep-well configurations to quickly remove or secure buried fasteners in crowded engine bays or structural assemblies.

Key Performance & Safety Features

  • 16-in-1 Hex Consolidation: Packages 16 critical SAE and metric dimensions across 4 color-coded dual-action socket assemblies.
  • Spring-Loaded Coaxial Action: Internal mechanics allow immediate access to primary and secondary configurations simply by compressing the smaller head.
  • Cold-Forged Integrity: Manufactured from heat-treated steel to absorb the peak shock and torque outputs of industrial impact equipment.
  • Deep Well Geometry: Long-reach design satisfies clearance demands when turning nuts completely down extended bolts or deep recess channels.
  • MODbox Integration: Includes an impact-resistant accessory case with a small parts tray built to mount directly onto the native MODbox™ modular storage infrastructure.

What's Included

  • (4) Quad-16 4-in-1 Impact Flip Sockets
  • (1) 1/4-Inch Hex Flip Socket Impact Shaft
  • (1) MODbox™ Accessory Case with Small Parts Tray

Technical Specifications

Tool Type: Impact Socket Set
Piece Count: 6 Pieces
Socket Profile: 6-Point Deep Well
Drive Interface: 1/4 in. Hex, 3/8 in. Square
Material Construction: Heat-Treated Cold-Forged Steel
Compliance Standard: ASME B107.2
Size Standards: SAE Fractional and Metric
Overall Length: 6.97 in.
Overall Width: 3.70 in.
Overall Height: 1.80 in.

Pro-Tip: When working with the nested coaxial spring layout, clear the drive channel periodically of embedded metal shavings or dynamic grit. Keeping the internal nesting chamber cleared preserves the instantaneous compression action and protects the system from lockouts during high-torque runs.