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Double Socket Arm for 20mm Ball

Double Socket Arm for 20mm Ball

Regular price $14.99 USD
Regular price Sale price $14.99 USD
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Vehicle Compatibility

Requires Offroam vehicle-specific mounting base and an Offroam phone holder

Phone Compatibility

Compatibility varies based on phone holder model.
Check phone holder model for phone compatibility.

What's in the Box


Ball diameter

Eye-to-eye length - Regular
1.8-in. [45mm]
Overall dimensions - Regular
1 x 1.7 x 2.4 in. [25.4 x 42 x 61.5mm]

Eye-to-eye length - Medium
2.8-in. [70mm]
Overall dimensions - Medium
1 x 1.7 x 3.4 in. [25.4 x 42 x 86.5mm]

Eye-to-eye length - Long
3.9-in. [100mm]
Overall dimensions - Long
1 x 1.7 x 4.8 in. [25.4 x 42 x 123mm]


  • Double socket arm: Die cast & powder coated aluminum with molded plastic thumbnut. Stainless steel hardware in black oxide finish.

Offroam™ designs and makes phone mounts that are shaped to fit the make, model and year of your vehicle. That’s why our mounts are the sturdiest money can buy.
  • Perfect view. Mount your devices in a perfect spot without blocking the view, controls, or air flow. The 20mm ball interface ensures compatibility and easy adjustability for a perfect viewing angle.
  • Rugged all-metal construction. Made entirely of precision-machined & anodized aluminium for long-lasting performance in scorching heat or blistering cold. We got you, Texas and Alaska.
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  • Fast Shipping

    Most orders placed by 11AM CST ship the same business day.

    Shipping Policy 
  • Hassle-Free Returns

    We will take back or exchange any product bought within 30 days of purchase

    Returns Policy 
  • Lifetime Warranty

    All Offroam products are guaranteed against manufacturer’s defects for an unlimited time.

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Designed for rough 4x4 trails. Offroam clamp is patent-pending mounting base that attaches securely to your vehicle and won't fall off, even over rough 4x4 trails or race days.

For any phone, even with a case. Offroam fits and holds any size modern phone (including iPhone 14 Pro Max), even in a case. Up to 3.8" wide and 0.67" thick.

No drilling, no glue. You shouldn't need to drill your new truck. Offroam mechanically clamps to the air vent without leaving any marks thanks to an embedded elastomer liner.

All the airflow you need. Whether in south Texas or in Alaska - you need the air vents to function. Offroam keeps your phone away from the vent so air goes where it's aimed, not the back of your phone.

Keeps the view clear. Offroam gives you an easy way to position your phone so you can see it without blocking the windshield.

Customer Reviews

Based on 9 reviews

Absolutely love these products. The phone is right where I need it when taking long trips. Thank you!!

Chris Denbow
Awesome product, great addition!

I wanted a little bit longer arm for my Offroam setup to clear the vent of my 4Runner, and be out of my direct vision while driving. The long double socket arm is perfect, and got my phone exactly where I wanted it. Great products from Offroam, and am very happy with them!

david sanders
Outstanding products and EXCELLENT support!

Service and quality of products seldom seen today!

Paul B
Amazing product, amazing support!

💯 in forums and to friends, out of the box thinking solution I spent a lot of time and money on others prior to this great product

David Fisher

Great product. Love it. Best on the market worth the money