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Aluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components, Fits Industry All Standard 1" Ball Adapters (3.54" Middle Arm)
FPN

FPN Aluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components

Bottom line: The FPN Aluminum Alloy Double Socket Arm: Aluminum alloy build handles high-vibration outdoor and off-road mounting; main trade-off: only fits 1" B-size balls, not A, C, or D RAM ball sizes.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

Pros & Cons

Pros

  • ✓ Aluminum alloy build handles high-vibration outdoor and off-road mounting
  • ✓ Fits all standard 1"/25mm B-size balls for mixing RAM-compatible adapters
  • ✓ Side twist knob clamps both ball ends in seconds, no tools needed
  • ✓ 3.54" middle arm adds usable reach and multi-angle positioning

Cons

  • ✗ Only fits 1" B-size balls, not A, C, or D RAM ball sizes
  • ✗ Arm only, no ball bases or device cradle included in the box
  • ✗ Fixed 3.54" length, no longer-reach option in this listing
  • ✗ Knob relies on hand tension and can loosen under hard impacts

Manufacturer description

Aluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components, Fits Industry All Standard 1" Ball Adapters

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SpecPicks Verdict

SpecPicks scored FPN Aluminum Alloy Double Socket Arm using a rating × review-volume × price-fit model applied to published specs and reviews across the accessories category. FPN's accessories lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for accessories of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Key Features

  • **Universal Compatibility**: This double socket arm is compatible with RAM B Size Mounts and fits all industry-standard 1" ball adapters, allowing you to effortlessly mix and match your unique device mounts.
  • **Durable Construction**: The Double Socket Arm is made of aluminum alloy, making it perfect for high-impact and high-vibration outdoor environments.
  • **Secure and Adjustable**: With a simple twist of the knob on the side of the arm, you can securely clamp both ends onto any 1 inch / 25 mm ball joint, ensuring your installation is quick, easy, and reliable.
  • **Customer Support Assurance**: Purchase with confidence knowing that our dedicated customer service team is available to assist you with any questions or needs regarding your Aluminum Alloy Double Socket Arm.

Full Specifications

BrandFPN
Unit Count1 Count
Model Number3.54" Middle Arm
Mounting Type1" Ball Mount
Special FeatureAdjustable
Vibration/RumbleYes
Compatible DevicesAll 1" Ball Adapters
Enclosure MaterialAluminum
Additional FeaturesAdjustable
Included ComponentsMedium Double Socket Arm
Warranty Description1
Water Resistance LevelNot Water Resistant
Compatible Phone ModelsRAM B Size Mounts
Compatible with Vehicle TypeCar, Motorcycle, Golf Cart, Bicycle
Full listing titleAluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components, Fits Industry All Standard 1" Ball Adapters (3.54" Middle Arm)

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Aluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components, Fits Industry All Standard 1" Ball Adapters (3.54" Middle Arm) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Aluminum Alloy Double Socket Arm Compatible with RAM Mounts B Size 1" Ball Components, Fits Industry All Standard 1" Ball Adapters (3.54" Middle Arm)
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