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RAM® Square Post Clamp Base for Posts up to 3" Wide - C Size

RAM® Square Post Clamp Base for Posts up to 3" Wide - C Size - Main image
$38.84 $52.49 In stock

Category: Components

The RAM-247U-3 is a square post clamp base with a 1.5" rubber ball. It connects to rails up to 3" maximum in width, making it part of the RAM Mounts C Size component system.

  • Square post clamp base design
  • Includes a 1.5" rubber ball
  • Connects to rails up to 3" maximum in width
  • C Size 1.5" ball, rated to hold 4 lbs
  • Part of the RAM Mounts components line
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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 (4.4 / 5 · 5 reviews)

Thomas C. ★★★★★

The rubber ball locks into my existing c-size arm with a solid click, and the clamp grabs my 3-inch rail without any wobble once I tighten it down. Feels sturdy enough to trust with my tablet on rough trails.

Olivia ★★★★★

Took a bit of fiddling to get the screw tight enough on my 3" rail, but once it's set, that 1.5" ball holds my device rock-solid through gravel roads and highway bumps. The clamp base feels dense and sturdy, and it's cut exactly to the C-size components I already had.

Christopher K. ★★★★★

The 1.5” rubber ball snaps into my C-size arm with zero play, and the clamp grips my 2.5” rail like it’s welded. Took under a minute to tighten down with the included knob.

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