will this work with a .75" ball?

No. In my opinion this would not close enough to be tight. It's rated for 1" and anything less looks unlikely given its' build tolerance.

Is this too bulky for a motorbike? All the customer images show this inside a car ... anyone have this on the bike handlebar?

Yes, you can use it on a bike. I have used it on a Harley Electraglide, a BMW K1300s, and a BMW R1200GS Adv. Works fine. But see my review. I think it is more bulky and complicated than it needs to be. You can achieve the same with simpler RAM options. But yes, you CAN use it on a bike.

Will it work with a 16mm ball

The description reads that it's for 1 inch balls, so I don't believe it would work at all with 16mm balls.

Can I easily rotate it from vertical to horizontal without loosening anything?

No, the rubber-coated RAM balls are designed not to slip. In order to rotate any ball or the central pivot, the corresponding wingnut must be loosened first.

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RAM MOUNTS Double Socket Swivel Arm for B Size 1" Balls, Ratcheting

Product ID: 81679914

Details

Brand
RAM MOUNTS
Color
Black
Compatible Devices
Portable
Compatible Phone Models
1
Mounting Type
Vehichle Mount

📏6.25" overall length

🔄360° center rotation

↪️180° ratchet swivel joint

S$54

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Description

🔧 Master your mount game with unmatched flexibility and durability!

BUILT TO LAST - Crafted from high-strength composite materials and backed by a lifetime warranty.
PRECISION ROTATION - 360-degree center rotation ensures perfect viewing angles every time.
SMOOTH SWIVEL ACTION - 180-degree ratcheting joint locks securely while allowing effortless adjustments.
INFINITE ADJUSTABILITY - Double ball-and-socket design offers near-limitless positioning freedom for your devices.
UNIVERSAL COMPATIBILITY - Fits any B size 1" RAM ball, seamlessly integrating with your existing mounts.

The RAM MOUNTS Double Socket Swivel Arm is a 6.25-inch composite connector designed for B size 1" RAM balls, featuring 360° center rotation and a 180° ratcheting swivel joint. It offers near-infinite adjustability for mounting portable electronic devices across vehicles like cars, motorcycles, and ATVs. Lightweight yet durable, it supports up to 2 pounds and comes with a lifetime warranty, making it a top choice for professionals seeking reliable, versatile mounting solutions.

Specifications

ASIN	B009SX0J88
Additional Features	Overall Length: 6.25", Socket-to-Socket Length: 5.5"
Arm Length	5.5 inches
Best Sellers Rank	#96 in GPS Vehicle Mounts
Brand	RAM MOUNTS
Color	Black
Compatible Devices	Portable Electronic Devices
Compatible Phone Models	1
Compatible with Vehicle Type	Automobile, Motorcycle, Bicycle, Truck, ATV, Golf Cart
Customer Reviews	4.6 4.6 out of 5 stars (2,505)
Enclosure Material	High strength composite
Global Trade Identification Number	00793442938771
Included Components	Auto part, Automotive Accessories, Replacement and Performance parts
Item Dimensions	9 x 3 x 1 inches
Item Type Name	Mount Double Socket Swivel Arm
Item Weight	6.4 ounces
Manufacturer	RAM Mounts
Mfr Part Number	RAPB2002U
Model Name	RAP-B-200-2U
Model Number	RAPB2002U
Mounting Type	Vehichle Mount
UPC	886172052913 190283707588 793442938771 793442936982
Warranty Description	Manufacturer Warranty
Water Resistance Level	Not Water Resistant
Weight Capacity Maximum	2 pounds

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S$54

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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