Park Tool SW-15 Triangle Trunker: The Expert for Unlocking the Hidden Tongue of Deep Cut Wheels

🛞 OVERVIEW: THE ESSENTIAL MAINTENANCE KEY FOR AERO WHEELS

The Park Tool SW-15 Triangle Tuner is specifically designed for removing and tuning the internal spoke nipples of modern deep-section (aero) and full carbon rims. It is a professional, specialized tool. For these premium rims, where standard outer spoke heads won't work, it's nearly impossible to perform a spoke fitting or repair without the SW-15. It combines three popular inner spoke head sizes in Park Tool's iconic triangular shape.

⚙️ TECHNICAL SPECIFICATIONS AND COMPATIBILITY

• Internal Spoke Nipple Dimensions Used:

  1. 3.2 mm Square – Nominal Outer Shaft Diameter: 6 mm

  2. 5 mm Hexagonal (Hex) – Nominal Outer Shaft Diameter: 7.5 mm

  3. 5.5 mm Hexagonal (Hex) – Nominal Outer Shaft Diameter: 8 mm

• Shaft Length: 50 mm (1.97 inches). This length is critical for the tool to reach the rim cavity and fit snugly into the spoke head. A shaft too short won't reach the head; a shaft too long can get stuck in tight spaces.

• Compatible Wheel Manufacturers (Including but not limited to):

  • FSA, Blackwell, Planet-X, HED, Rolf, Bontrager, Campagnolo, Mavic and many similar manufacturers, deep section alloy or carbon wheels using inner spoke heads It is compatible with.

🔧 DESIGN AND USAGE ADVANTAGES

• Three-Way (Triangular) Wrench Form:

  • The Park Tool's distinctive "Y" shape gives the tool... perfect comprehension provides.

  • Each arm corresponds to a different size (3.2mm square, 5mm hexagon, 5.5mm hexagon).

  • This form, your hand won't slip even when applying high torque And it allows you to transfer your force directly to the wire.

• Custom Design for Inner Wire:

  • On standard rims, the spoke heads are located on the outer surface of the rim and can be accessed with a standard flat or T-handle wrench.

  • Aero/Carbon rims wire ends for aerodynamics and visual integrity. the inner cavity of the wheel (rim bed) It is concealed. The SW-15's slim, long shaft fits into this gap, reaching the head and allowing you to rotate it.

• Strong and Durable Construction:

  • Made from high-quality steel, it offers long-lasting and reliable use without abrading or warping the hard material (typically brass or aluminum) of the wire heads.

🛠️ PRACTICAL USE SCENARIOS

1. Aero Wheel Tensioning: It is used when tuning a newly installed wheel or to tighten loosened spokes on an old wheel.

2. Spoke Replacement: When a broken string needs replacing, it's essential to remove the inner cap, take out the old string, and tighten the new string's cap.

3. Wheel Truing: It is used to tighten or loosen the spokes in order to correct lateral (side-to-side) or vertical (hop) curvatures that occur in the rim.

📊 TECHNICAL SUMMARY TABLE

✅ WHY PARK TOOL SW-15? WHO SHOULD USE IT?

• PROTECTS YOUR DELICATE WHEELS: The inner wire heads may be made of soft materials (aluminum). An incorrectly sized or poor quality wrench can damage these heads. "rounding off" It can render the wheels unusable and necessitate a very expensive wheel replacement. The SW-15 eliminates this risk with its perfectly fitting ends.

• A TIME AND NERVE SAVING ACHIEVEMENT: Without the right tool, trying to tune an aero rim is nearly impossible. This wrench does the job. professional and efficient It brings about a certain state.

• FOR HOME RENOVATION AND PROFESSIONAL WORKSHOPS: For advanced cyclists and all bicycle mechanics who want to do their own wheel maintenance. It is an indispensable piece of equipment.

This wrench is ABSOLUTELY ESSENTIAL for the following cyclists:

1. Those with deep-section (aero) alloy or carbon rims.

2. Those who adjust their wheels or change strings themselves, or who want to learn.

3. Professionals or enthusiasts involved in bicycle repair.

Conclusion: Park Tool SW-15 , Niche but critical It's a perfect tool that fulfills a need. It's key to protecting your investment in premium rims and gaining the freedom to maintain them yourself. If you have a rim that uses "inner spoke heads," this tool isn't an option, it's a must. It is an absolute necessity. Instead of sending your rim to the manufacturer or calling a private mechanic for a simple retuning, this wrench puts the control in your own hands.