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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 5 - Jul 10
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Description
RAM Double Ball Mount with Round & Diamond Bases - C Series - Short ArmRAM 138U B RAM Double Ball Mount with Round & Diamond Bases C Size Short The RAM 138U B is a drill down mounting solution pairing a round AMPS base and a diamond AMPS base on a short C Series double socket arm, giving a compact, near infinitely adjustable mount with two mounting hole options. Key Features Round base with the universal AMPS hole pattern for surface mounting; diamond base with the 2 hole AMPS pattern for lighter device holders Includes
RAM-138U-B RAM® Double Ball Mount with Round & Diamond Bases – C Size Short
The RAM-138U-B is a drill-down mounting solution pairing a round AMPS base and a diamond AMPS base on a short C Series double socket arm, giving a compact, near-infinitely adjustable mount with two mounting-hole options.
Key Features
- Round base with the universal AMPS hole pattern for surface mounting; diamond base with the 2-hole AMPS pattern for lighter device holders
- Includes one round ball base, one diamond ball base, and a short C Series double socket arm for a low-profile fit
- RAM® ball-and-socket technology allows near-infinite adjustability and dampens shock and vibration
- Powder-coated, marine-grade aluminium construction
- Backed by RAM Mounts' lifetime warranty
Works With
The round base bolts down using the 4-hole or 3-hole AMPS pattern, while the diamond base connects to RAM® and many third-party cradles with the 2-hole AMPS pattern. The 1.5" C Size balls suit any RAM® holder built for a C Size ball.
Dimensions & Specifications
- Overall height: 132.7mm (5.23")
- Diamond base: 61.7 x 33.3mm (2.43 x 1.31"), 2-hole AMPS 48.6mm (1.912") centre-to-centre
- Round base: 63.5mm (2.5") diameter; 4-hole AMPS 30 x 38mm, 3-hole AMPS 120° 46.0mm
- Ball size: 1.5" rubber ball, C Size
- Material: powder-coated marine-grade aluminium
- Weight: 390g (0.86 lbs)
- Load rating: 1.814kg (4 lbs) standard use, 1.36kg (3 lbs) heavy-duty use
What's Included
- RAM-202U round base with 1.5" ball
- RAM-238U diamond base with 1.5" ball
- RAM-201U-B short double socket arm for C Size 1.5" balls
FAQs
Q: What size screws do the base plates take?
A: The AMPS patterns most commonly take #8, #10, M4, or M5 screws. If you're pairing this with a RAM® holder, the holder comes with its own hardware; surface-mount hardware for your own application isn't included.
Installation Video
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.4 ★★★★★
Based on 604 reviews
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Product Reviews
★★★★★ 4
Very nice fleeces
This is a clean, soft, well groomed fleece intended for use on a 6 foot long sofa, so bought 2. They moved too much as a result of shifting bodies on the leather couch, so will get a longer version, sewn bottom to bottom, and used each of these fleeces on both armrests, instead.
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Reviewed in the United States on August 15, 2025
★★★★★ 5
Excellent Product!!! Will purchase again!
Size: 2' x 3' (Natural), Color: Wolf Tipped
Instead of ordering a cover for reclining loveseats, I chose to drape one of these over the headrest on either end of our loveseat. Not only do they protect the leather, they also help to elevate our decor. The rugs were received in a very timely manner. They are super soft, & warming as we move into the winter months. We've had family & friends comment on how great they look. 2 of them have already ordered, & added them to their sofa/loveseat/recliner decor. Have an issue of them slipping, add some velcro in between the crook of the cushion & the back of the furniture piece. It doesn't show & will help to keep the rug in place; if your busy body.!
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Reviewed in the United States on December 10, 2025
★★★★★ 5
Perfect for sensory sensitive kids and for the pure beauty of it
Size: 2' x 6' (Natural), Color: Natural (Yellow Undertones), Size: 2' x 6' (Natural), Color: Natural (Yellow Undertones)
After speaking over the phone with the seller, I was confident in this purchase for my SPD son. They do not use harsh chemicals or dyes in the process. It is from New Zealand and the only use in Vietnam is for shipping. My son hasn't been diagnosed yet for Autism but he is in the process. He is super sensitive to all things sensory and Amazon feedback isn't the place to give specific details on his condition but I will write that when he fist touched it- which was willingly- he smiled and asked to sleep on it. When he laid down on it and I covered him- he was calm and smiling. In the pic I provided he is calm and holding his door (his obsession is doors and windows). He even set his door down to hold the fur. For other mommies and papas with spd/autistic kids you know that willingly touching a new fabric and setting down an obsessive item is huge and super encouraging!
I am so grateful to have such a quality item that is affordable for my special needs son. His older sister received one as well as is now pretending to be a sheep. Fun for everyone!
The ONLY negative is that the brand/info sticker on the pelt was a pain to get off and pulled some of the felt - not damaging it but blemishing the unity -but if the skin is down it will not be noticeable.
A super fun detail is that all of the fur is combed out but there were a few strands that were wavy and had a slight curl- I LOVED that.
There was no odor at all which is great! I expected an animal smell which is better than chlorine or dioxin which is what competitors use in their process.
There is no noticeable seam in the middle on the top where the two pelts are gathered.
I am soooo satisfied!
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Reviewed in the United States on February 13, 2016
★★★★★ 5
Exactly as described and what I needed.
Size: 2' x 6' (Natural), Color: Wolf Tipped
I have a bad back along with other medical problems. I bought this for padding in my wheelchair. Very thick, soft, flexible, everything I needed. No smell and very little shedding even initially. Arrived quickly and well packaged.
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Reviewed in the United States on January 24, 2026
★★★★★ 5
Works for Sherpa, and heavy rugs
This worked on my 2 Sherpa jackets and a heavy furred rug. I tested it on my old Sherpa jacket that had the furs pretty much flat after years. I used this on it which took about 3 hrs to do and it feels brand new. I was so shocked that I used it on my old rug that had about an inch length in fur. The fur was all tangled so it had little stalks sticking out. After about 6-7 hrs, the rug was straight up rejuvenated felt brand new.
I’m was very pleased with this product. Now, the real question is it worth it? I’ll just tell my opinion from my experience and let you decide for yourself. The product itself feels sturdy with a wooden base. It’s around 6 and a half inches so not very big. (This is one of the reasons why the rug too so long.)The metal brushed was surprisingly durable. I was applying a good amount of force when combing my rug and there were no bending.
For 14 dollars and some elbow grease, I got two new jackets and a rug. The brush didn’t break so I can just keep using this to maintain. In my books, I got my moneys worth.
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Reviewed in the United States on January 26, 2024
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