Wera Tools
  • Top-down view of the Wera 7880 Joker 4XL self-setting insert spanner showing the 41-55 mm size markings and 14x18 mm drive pin
  • Close-up of a 14x18 mm rectangular drive receiver socket on a torque wrench handle
  • Diagram demonstrating the continuous mechanical ratcheting movement of the Wera Joker 4XL insert spanner on a bolt
  • Detailed close-up of the safety pin lock mechanism on a Wera 14x18 mm torque wrench insert tool
  • Close-up view of the laser-engraved QR code on a Wera 14x18 mm torque wrench insert tool for torque calculations
  • Diagram showing how the smooth parallel jaws of the Wera Joker insert spanner apply pressure evenly to prevent rounding hex nuts
  • Action graphic showing the Wera Joker 4XL insert spanner automatically adjusting its jaws to grip a large hexagonal nut
  • Technical diagram illustrating the 30-degree return angle feature on the Wera Joker 4XL insert spanner for tight spaces
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Wera 7880 Joker 4XL Self-Setting Insert Spanner (41-55 mm / 1-11/16"-2-1/16", 14x18 mm) – 05020178001

Wera 7880 Joker 4XL Self-Setting Insert Spanner (41-55 mm / 1-11/16"-2-1/16", 14x18 mm) – 05020178001

$173.99
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SKU : 05020178001

Made in The Czech Republic The Czech Republic

Streamline heavy-duty installations and maintenance with the Wera 7880 Joker 4XL Self-Setting Insert Spanner (05020178001). Designed for torque wrenches with a standard 14x18 mm rectangular drive, this versatile insert spanner automatically adjusts to grip continuous metric and imperial fastener sizes from 41 mm to 55 mm (1 11/16" to 2 1/16"), eliminating the hassle of carrying multiple large, heavy individual insert tools onto the job site.

 

Featuring parallel, smooth jaws, the Joker 4XL delivers non-damaging contact on surface corners to prevent nut rounding. Its mechanical ratchet function and 30° return angle allow rapid, continuous screwdriving in tight spaces without constantly repositioning the tool.

 

Key Features & Benefits:

  • Self-Setting Jaw Range: Automatically continuously adjusts to fit hexagonal bolt heads and pipe fittings between 41 mm and 55 mm (1 11/16" to 2 1/16").

  • Standard 14x18 mm Drive: Securely mounts into all torque wrenches featuring a 14x18 mm rectangular receiver socket.

  • Fast Mechanical Ratcheting: Integrated lever mechanism provides smooth, continuous ratcheting action for fast tightening and loosening.

  • 30° Small Return Angle: Corner-width rectangular prisms within the mouth structure allow a tight 30-degree return angle, perfect for confined work areas.

  • Fastener Corner Protection: Parallel smooth jaws distribute force evenly across the flat faces of the nut rather than the corners to prevent rounding and finish damage.

  • Laser-Engraved Torque QR Code: Features a permanent laser QR code on the drive end for instant torque value calculation via smartphone app.

 

Specifications:

  • Part Number / MPN: 05020178001

  • EAN / UPC: 4013288237026

  • Drive Size: 14x18 mm female rectangular insert mount

  • Capacity (Metric): 41 mm – 55 mm

  • Capacity (Imperial): 1 11/16" – 2 1/16"

  • Total Length: 151 mm

  • Tool Weight: 1,000 g (2.2 lbs)

 

The Mr. Tools Guarantee:

  • 100% Genuine Guarantee: As an authorized distributor, every tool we sell is guaranteed authentic and backed by full manufacturer support and limited lifetime warranty coverage.

  • Fast U.S. Shipping: In-stock orders ship quickly directly from our U.S. warehouse to keep your job site moving without downtime.

  • Dedicated Support: We stand behind every sale with fast, hassle-free customer support whenever you need help with an order.

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