GripEdge | 39-PC RPT™ 1/4", 3/8", & 1/2" Drive Low-Profile, Standard, Extra-Long & Security Master Triple Square Socket Set
GripEdge | 39-PC RPT™ 1/4", 3/8", & 1/2" Drive Low-Profile, Standard, Extra-Long & Security Master Triple Square Socket Set
GripEdge | 39-PC RPT™ 1/4", 3/8", & 1/2" Drive Low-Profile, Standard, Extra-Long & Security Master Triple Square Socket Set
GripEdge | 39-PC RPT™ 1/4", 3/8", & 1/2" Drive Low-Profile, Standard, Extra-Long & Security Master Triple Square Socket Set

GripEdge | 39-PC RPT™ 1/4", 3/8", & 1/2" Drive Low-Profile, Standard, Extra-Long & Security Master Triple Square Socket Set

SKU: MTS39S
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Regular price$549.99
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The GripEdge Tools 39-Piece Triple Square Master Bit Socket Set delivers comprehensive coverage for virtually every triple square application you'll encounter. Available in 1/4", 3/8", and 1/2" drive sizes, this professional-grade master kit combines Low-Profile, Standard, Extra-Long, and Security (Tamper-Proof) bit sockets into a single, purpose-built system for Audi, Volkswagen, Porsche, and other European automotive applications.

Built on our proven second-generation design with patented Rounding Prevention Technology (RPT™) and precision-machined S2 tool steel construction, this master set provides the torque control, durability, and versatility professionals demand for automotive, drivetrain, suspension, engine, and industrial work.

Kit Includes:

  • Standard Triple Square Bit Sockets
    Sizes: M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M16, M18
    Drive Sizes: 1/4", 3/8", 1/2"
  • Low-Profile Triple Square Bit Sockets
    Sizes: M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M16, M18
    Drive Sizes: 1/4" & 3/8"
  • Extra-Long 6" Triple Square Bit Sockets
    Sizes: M4, M5, M6, M7, M8, M9, M10, M12, M13, M14, M16, M18
    Drive Sizes: 1/4", 3/8", 1/2"
    Length: 6" extended bit sockets
  • Tamper-Proof (Security) Triple Square Bit Sockets
    Sizes: MT14, MT16, MT18
    Drive Sizes: 3/8” & 1/2”
  • Rounding Prevention Technology (RPT™) provides: Up to 50% more grip on intact fasteners and 400% more grip on damaged fasteners, minimizing rounding and extending fastener life.
  • Precision-engineered S2 tool steel: Delivers exceptional torsional strength; corrosion-resistant finish protects against rust and wear.
  • Stamped markings: Paint-filled stamped markings making identification easy in any environment.

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European Automotive Applications

This set is a must-have for Audi, Volkswagen, and Porsche owners, technicians, and enthusiasts. Triple Square fasteners are widely used throughout German automotive engineering, covering cylinder head bolts, drivetrain assemblies, suspension components, and interior hardware.

Most Common Sizes

This kit includes the most common sizes you will find on your Volkswagen, Audi, and Porsche cars and trucks.

Industrial & Agricultural Applications

Triple Square fasteners are built for high-torque, and with that comes use in agricultural and industrial applications. European-make farm equipment, gearboxes, and rail equipment are seeing the rise in triple square fastener use.

RPT™ – Rounding Prevention Technology

RPT™ dramatically increases grip by delivering up to 400% more grip on damaged fasteners and 50% more on new fasteners compared with standard drivers. Conventional hex bits deform fasteners by pushing material outward until the corners round off. RPT tips are machined to prevent that deformation, ensuring torque transfers into the fastener rather than around it. Even when dealing with severely rounded fasteners, RPT™ provides enough torque to remove them without drilling—a critical advantage in tight spaces.

Custom Molded Case

All sockets are housed in a custom-molded case with a removable textured EVA foam inlay and printed size labels. Remove the inlay from the case for convenient storage and organization in your toolbox. And if you’re on the go, the locking latch of the case keeps your tool set secure.

Engineered to Win.

GripEdge Tools merges patented Rounding Prevention Technology, real‑world durability and professional‑grade innovation to solve problems other brands ignore.

Founded in 2015, the company debuted its breakthrough extraction technology two years later and now holds over 200 patents, continuously pioneering industry‑leading tools.

GripEdge products are trusted by technicians worldwide and are available through approved distributors


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