SKU: 25753886579

RAM Clamp Base - Square 38mm Post clamp with B Series Ball

Sale price$77.09 Regular price$85.65
Save 10%

Pay in installments of $21.41 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

RAM Clamp Base - Square 38mm Post clamp with B Series BallRAM B 247U 15 Square Post Clamp Base (38mm, B Size Ball) The RAM B 247U 15 is a RAM Mounts square post clamp base for posts and rails up to 38mm (1. 5") wide, fitted with a B size 1" rubber ball. Bolt it to a roll bar, tube or frame and pair it with any B size double socket arm to build a vibration tolerant mount for a phone, handheld GPS or other light device. Key Features Clamps onto square posts and rails up to 38mm (1. 5") wide; adjustable and

RAM-B-247U-15 Square Post Clamp Base (38mm, B Size Ball)

The RAM-B-247U-15 is a RAM Mounts square post clamp base for posts and rails up to 38mm (1.5") wide, fitted with a B size 1" rubber ball. Bolt it to a roll bar, tube or frame and pair it with any B size double socket arm to build a vibration-tolerant mount for a phone, handheld GPS or other light device.

Key Features

  • Clamps onto square posts and rails up to 38mm (1.5") wide; adjustable and easily removed or repositioned
  • Includes a B size 1" RAM rubber ball that connects to any B size RAM double socket arm
  • RAM rubber ball-and-socket design gives near-infinite angle adjustment
  • Powder-coated marine-grade aluminium, built for vibration and weather
  • Backed by RAM's lifetime warranty

Works With

Any B size (1" ball) RAM component: connect a B size double socket arm, then add a B size ball adapter or device holder to suit your gear. The base is removable and can be repositioned along the post at any time.

Dimensions & Specifications

  • Maximum post width: 38mm (1.5")
  • Ball size: 1" (B size)
  • Weight capacity, standard use: 907g (2 lbs)
  • Weight capacity, heavy-duty use: 454g (1 lb)
  • Product weight: 173g (0.38 lb)
  • Material: powder-coated marine-grade aluminium
  • Hardware included: (2) 5/16"-18 x 3" machine screws, (2) 5/16"-18 Nylock nuts

FAQs

What size post does it fit? Square posts and rails up to 38mm (1.5") wide.

What does it connect to? Any B size RAM arm and holder via the included 1" ball.

Is the mounting hardware included? Yes, two 5/16"-18 x 3" machine screws and two Nylock nuts.

How is it dispatched? In stock items ship from our Auckland warehouse, normally within one business day of your order.

Watch the product video

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 25753886579

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 29 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
P
Verified Purchase
Paige
Boise, US
★★★★★ 5
Definitely worth the price
Size: 6.5, Color: Black/Black
Absolutely love these boots! I originally bought them to wear in NYC in December & they did not disappoint. They were comfortable, cute, durable and worked well in the slush/snow. The traction on the bottom is also nice! They kept me warm with wool socks. I wear them almost daily now. Perfect for everyday. easy to wear with variety of outfits. Good every day shoe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
K
Verified Purchase
Kimberly
Bozeman, US
★★★★★ 5
Snagged a deal
Size: 7, Color: Redwood/Gum 10
I waited and waited to get these boots! I knew I was chancing it, but they went on sale, and I snagged them! I am a size 7, and they fit nicely with socks. a little loose, barefooted, but what psycho wears boots without socks? They are comfortable and really well-made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026
A
Verified Purchase
ashlynnk
Phoenix, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
A
Verified Purchase
Abby B
Lowell, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
E
Verified Purchase
EE
Cuba, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

recommand products