17mm Ball Joint Extension Arm for Car Air Vent Phone Holder

Extend Your Reach — Smarter Phone Mounting in Your Car

The 17mm Ball Joint Extension Arm by Untoom is the perfect upgrade for your car air vent phone holder. Crafted from premium aluminum alloy, this sleek extension rod gives you extra length and a full 360° adjustable ball joint so you can position your phone exactly where you need it — no more awkward angles or blocked views.

Why You'll Love It

• Universal 17mm Ball Joint Compatibility — Works seamlessly with the vast majority of 17mm ball-joint car phone mounts and air vent holders on the market.
• Premium Aluminum Alloy Build — Lightweight yet rigid, the aluminium construction resists flex and vibration so your phone stays firmly in place on every drive.
• 360° Articulating Ball Joint — Rotate and tilt to any angle for the perfect line of sight, whether you're navigating, streaming, or hands-free calling.
• Extended Reach — Adds valuable distance between your air vent and your phone holder, clearing dashboard obstructions and keeping your device within easy view.
• Easy Installation — Simply attach to your existing 17mm ball-joint holder — no tools, no drilling, no hassle.
• Clean, Minimalist Design — The slim aluminium finish blends naturally with modern car interiors.

Specifications

• Brand: Untoom
• Material: Aluminum Alloy
• Ball Joint Size: 17mm
• Compatible With: Universal 17mm ball-joint car phone holders
• Model: C-441-A
• Country of Origin: Made in Mainland China

Works Great With

Pair this extension arm with other smart organisers to keep your car tidy and your tech within reach. Check out our 10-Pack Silicone Cable Ties – Reusable Cord Organizers to keep your charging cables neat, or explore the Tactical Retractable Spring Rope Keychain Lanyard for a handy everyday carry accessory.

Learn more: FuelEconomy.gov on vehicle maintenance

Frequently Asked Questions

Q: What size ball joint does this car phone holder extension arm fit?

A: This extension arm is designed for standard 17mm ball joint car phone holders and air vent mounts. It is universally compatible with the vast majority of 17mm ball-joint systems available on the market.

Q: Is the 17mm ball joint extension arm easy to install?

A: Yes! Installation is tool-free and straightforward. Simply connect the extension arm to your existing 17mm ball-joint car phone holder — it snaps securely into place in seconds, and the ball joint can then be adjusted to your preferred viewing angle.

Q: Will this extension arm feel sturdy while driving?

A: Absolutely. The extension arm is made from solid aluminum alloy, which provides an excellent strength-to-weight ratio. It resists road vibration and holds its position firmly, keeping your phone stable even on bumpy roads.

Q: Is this compatible with all car brands?

A: Yes — as long as your current car phone holder uses a 17mm ball joint connection, this extension arm is universally compatible regardless of your car's make or model.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.