RAM® Diamond Ball Base with Mounting Hardware

Name: RAM® Diamond Ball Base with Mounting Hardware
Brand: RAM Mounts
SKU: RAM-B-238U-INT1
Price: 9.76 USD
Availability: InStock
Rating: 4.2 (5 reviews)

RAM® Diamond Ball Base with Mounting Hardware - Main image

$9.76 ~~$15.49~~ In stock

Category: Components

The RAM-B-238U-INT1 consists of a 1" diameter rubber ball connected at right angles to a 2.43" x 1.31" diamond base. The base has two holes 1.912" from center to center, matches the industry standard AMPS hole pattern and will connect to a large variety of RAM Mount and third party cradles.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.2 / 5 · 5 reviews)

Sofia ★★★★★ Oct 22, 2026

The rubber ball is surprisingly sturdy yet gives just enough flexibility to absorb bumps. Installed it on my boat’s console and those 1.912" center-to-center holes lined up perfectly with my existing mount pattern.

Elizabeth J. ★★★★★ Oct 18, 2026

The diamond base lined up perfectly with the pre-drilled holes on my dash, and that 1" rubber ball grips the arm tight enough that nothing shifts on rough roads. Took me maybe five minutes to bolt everything down. Solid little piece of hardware for the money.

Madison ★★★★☆ Oct 21, 2026

The diamond base’s two mounting holes lined up perfectly with the standard pattern on my existing hardware, so installation took all of five minutes. The rubber ball feels dense and grippy, though the right-angle orientation took a bit of getting used to for my setup.