TruDesign Skin Fitting Installation Tool – Composite Thru Hull Install Tool

Make installing thru-hull fittings faster, easier, and cleaner with the TruDesign Skin Fitting Installation Tool—a simple but highly effective tool designed for one-person installation of marine skin fittings.

This innovative tool securely locks into the head of TruDesign skin fittings, preventing rotation while you tighten the backing nut from inside the hull. This eliminates the need for a second person, making installation quicker and more efficient .

Manufactured in New Zealand from glass-reinforced nylon composite, the tool is lightweight, strong, and completely corrosion-resistant, making it ideal for repeated use in marine environments .

The ergonomic design includes a handle for easy grip, allowing you to apply sealant or epoxy without getting your hands messy. A positive “click” engagement system ensures the tool is properly seated in the fitting before installation, improving accuracy and reducing installation errors .

Compatible with both domed and recessed TruDesign skin fittings (¾″–2″), this tool is an essential addition to any marine plumbing toolkit—especially for DIY boat owners and installers.

Key Features

• One-person installation tool – no helper required
• Prevents fitting rotation – ensures secure tightening
• Glass-reinforced nylon composite – strong, lightweight & corrosion-free
• Compatible with TruDesign fittings – domed & recessed (¾″–2″)
• Positive “click” engagement – confirms correct fit
• Ergonomic handle – clean, easy application with sealant or epoxy
• Reusable design – ideal for multiple installs

Specifications

• Brand: TruDesign
• Product Type: Skin fitting installation tool
• Material: Glass-reinforced nylon composite
• Compatibility: TruDesign domed & recessed skin fittings
• Sizes Available: ¾″, 1″, 1¼″, 1½″, 2″
• Use: Installation of thru-hull skin fittings
• Reusable: Yes

Ideal Applications

• Installing TruDesign thru-hull skin fittings
• Boat plumbing upgrades and refits
• DIY marine installations
• Professional marine servicing

This tool is widely used because it simplifies what is normally a two-person job, improving installation accuracy and saving time.

Why Buy from Barton Marine NZ?

• Trusted NZ marine plumbing supplier
• Fast nationwide delivery
• Genuine TruDesign NZ-made products
• Essential install tool for thru-hull systems

Pro Tip

For best results:

• Use with marine sealant (Sikaflex) during installation
• Pair with TruDesign skin fittings + ball valves for a complete system
• Dry-fit first to confirm correct size before applying sealant