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Description
RAM Double Socket Arm with Round Base - B Series 1" Ball - Medium lengthRAM B 103U RAM Double Socket Arm with Round Base B Size Medium The RAM B 103U pairs a round AMPS base with a B Series medium length double socket arm, leaving one socket open to accept any RAM 1" ball base or device cradle for a near infinitely adjustable mount. Key Features Round base features the industry standard AMPS hole pattern; connects to a wide range of RAM device holders B Size medium length double socket arm with one open 1" socket Ball and
RAM-B-103U RAM® Double Socket Arm with Round Base – B Size Medium
The RAM-B-103U pairs a round AMPS base with a B Series medium-length double socket arm, leaving one socket open to accept any RAM® 1" ball base or device cradle for a near-infinitely adjustable mount.
Key Features
- Round base features the industry-standard AMPS hole pattern; connects to a wide range of RAM® device holders
- B Size medium-length double socket arm with one open 1" socket
- Ball-and-socket technology allows near-infinite adjustability at both ends
- Powder-coated, marine-grade aluminium construction
- Backed by RAM Mounts' lifetime warranty
Works With
The open socket accepts any RAM® component with a B Size (1") ball, such as device cradles, X-Grip holders, or another ball base. The round base bolts down using the 4-hole or 3-hole AMPS pattern.
Dimensions & Specifications
- Overall length: 109.5mm (4.31")
- Socket-to-socket length: 76.2mm (3")
- Round base: 63.5mm (2.5") diameter
- Hole patterns: 4-hole AMPS 30 x 38mm; 3-hole AMPS 120° 46.0mm
- Ball size: 1" rubber ball, B Size
- Material: powder-coated marine-grade aluminium
- Weight: 195g (0.43 lbs)
- Load rating: 907g (2 lbs) standard use, 454g (1 lb) heavy-duty use
What's Included
- RAM-B-201U double socket arm for B Size 1" balls
- RAM-B-202U round base with 1" ball
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
4.2 ★★★★★
Based on 93 reviews
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Product Reviews
★★★★★ 5
GREAT 80v edger (but Kobalt users beware)
Size: 8" Edger Gen1, Size: 8" Edger Gen1
This Greenworks 80v edger is fantastic. I was surprised at how sturdy and rigid the shaft is - much more so than the very much more expensive Stihl Brushcutter I used for years. I like the adjustability of the blade depth and the power is impressive. You will get more run time with higher amp batteries - I have both 2.0 and 2.5 amp batteries, but if you have multiple batteries and chargers (from acquiring multiple tools) you will never be waiting for a battery to charge.
If you have only purchased Greenworks tools, then you are golden. BUT HERE IS THE RUB IF YOU, LIKE ME, THOUGHT THEY WERE STRAIGHT-ACROSS COMPATIBLE WITH THE SAME LINE OF TOOLS THEY MANUFACTURED FOR LOWE'S UNDER THE KOBALT MONIKER AND BLUE COLOR, AS DIFFERENTIATED FROM THEIR STANDARD BRIGHT GREEN.
One of the reasons I went ahead and committed to buying the Kobalt line of 80v yard tools was because Greenworks made them and I figured that it would be a long-lasting and stable design platform, being the same 80v system across two different brands. Then Lowe's dropped the 80v line. I was able to get a few more of their tools for great clearance prices and looked forward to switching over to the complete line of Greenworks 80v tools. was very happy to be able to order their edger because it's the exact same power system - just that all of my gear is Kobalt blue.
AND HERE IS THE DEAL WITH THAT:
They are different. The Kobalt 80v battery will not fit/slide into the Greenworks 80v battery compartment/housing (*as manufactured). - I guess I shouldn't have been surprised - and it could have been Lowe's that required that the stuff made for them specifically would be incompatible. But since it's the same power system, I wondered what the difference was and if I could work-around their obstructionist corporate bs. What I discovered was that the battery compartment on the tools have two long molded channel-guides (male) that match the two long molded (female) channels in the batteries. The vertical placement of the bottom 'rail' in the tool/compartment is positioned in a slightly different spot between the Kobalt and Greenworks 'brands'. But this actually works, because I just used a hand chisel and removed the 'bottom' rail from the Greenworks tool/edger. WA-LA - EUREKA!!! It worked great! It's a great fit, the top rail is more than enough to hold the battery stably in position and the 'lock' mechanism functions perfectly!
I am looking forward to buying more tools in the Greenworks 80 volt line without having to replace all of the Kobalt tools I already paid for AND ESPECIALLY the rediculously expensive batteries...
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Reviewed in the United States on December 29, 2021
★★★★★ 4
Great product that makes edging very fast
Size: 8" Edger New
Edging was quite a job because I had to do it with a hand tool. I have quite a few Greenwork tools, so I decided to purchase the edger. It works great and I am in general happy with it. The three downsides for me are that tool is quite heavy when it also has the battery in it, that the metal blade decreases in size rapidly because of the friction when edging near concrete, and that the wheel is in such a position that I have to bend substantially while the blade does not edge deep enough so that I have to lean the tool on the metal strip at the bottom of the tool.
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Reviewed in the United States on August 17, 2025
★★★★★ 5
Very pleased
Size: 8" Edger New
Works well and gives a nice clean line. I am able to take care of the overgrown edges very fast.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Plenty of power. Easy to use.
Size: 8" Edger New
I was amazed at the power of this edger. Due to health issues we couldn’t give our lawn adequate attention. It hadn’t been edged in over a year. This edger cut thru the heavy overgrown grass. Maintaining the edging now is a breeze. It uses the same 80 volt battery as my blower👍. The only negative is there is no edge guide, but once I got used to it, it’s not really needed.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Great product, well made, would buy again!
Size: 8" Edger New
Great product, well made, would buy again!
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Reviewed in the United States on April 20, 2026