RAM® Ball Adapter with AMPS Plate - B Size

Name: RAM® Ball Adapter with AMPS Plate - B Size
Brand: RAM Mounts
SKU: RAM-B-347U
Price: 7.69 USD
Availability: InStock
Rating: 4.8 (5 reviews)

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$7.69 ~~$10.99~~ In stock

Category: Components

The RAM-B-347U base consists of a B size 1" diameter rubber ball connected to a 2" x 1.7" square base. The base has four pre-drilled holes at each corner, using the universal AMPS hole pattern.

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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 (4.8 / 5 · 5 reviews)

Abigail I. ★★★★★ Oct 23, 2026

The AMPS hole pattern lined up perfectly with my existing mount, making installation a breeze. That rubber ball grips securely without any slipping, even on rough roads.

William ★★★★★ Oct 21, 2026

The rubber ball is rock solid, no wobble once the plate’s bolted down, and the 1" size fits my cradle arm perfectly. Pre-drilled holes matched my mount base without any drilling fuss.

Stella ★★★★★ Oct 20, 2026

The four drilled AMPS holes lined up perfectly with my mount, and the rubber ball grips tight without any slipping. Installation took just a few minutes with the included screws.