The diameter of the ball join is 1 inch or 25mm. The measurement is not to describe the length of the entire adapter. Measure the diameter of the ball from top of one end to another. This iBOLT 25mm to 25mm Dual Ball Mount arm is made out of a sturdy composite material and is compatible with all industry standard 1 inch / 25 mm mounting arms. Ball joints are coated in a rubber material.
Commonly used as an extension arm with IBBZ-33921 or IBBZ-33791 and other industry standard 25mm / 1 inch dual ball mounts / arms. Use with Bizmount series mounts or any other 1-inch / 25mm / B size industry standard compatible mount.
With the dual ball adjustments, this mount allows you to have the flexibility of rotating your device 360 degrees.
Length of this arm / adapter is 2.5 inches measuring from one end of the arm to the other and is made out of sturdy composite material.

Product Description

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Start with a Base

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Customer Reviews	4.6 out of 5 stars 850	4.7 out of 5 stars 291	4.5 out of 5 stars 109	4.5 out of 5 stars 161	4.5 out of 5 stars 154	3.6 out of 5 stars 6	4.2 out of 5 stars 4
Price	$7.95$7.95	$11.95$11.95	$11.95$11.95	$7.95$7.95	$10.95$10.95	$10.95$10.95	$29.95$29.95
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Heavy Duty Composite	Metal	Metal	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite	Metal
Base Type	AMPS Pattern Drill Base	AMPS Pattern Drill Base	AMPS Pattern Drill Base	AMPS Pattern Drill Base	Suction Cup Mount	Suction Cup Mount	Suction Cup Mount
Mounting Location	Any Flat Surface	Any Flat Surface	Any Flat Surface	Any Flat Surface	Windshield or Dashboard	Windshield or Dashboard	Windshield or Dashboard
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔	✔	✔

Additional Base Options

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Customer Reviews	4.6 out of 5 stars 90	4.4 out of 5 stars 43	—	4.4 out of 5 stars 96	4.6 out of 5 stars 6	4.1 out of 5 stars 144	4.9 out of 5 stars 13
Price	$19.95$19.95	$12.00$12.00	$29.95$29.95	$26.00$26.00	$25.00$25.00	$8.95$8.95	$19.95$19.95
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Heavy Duty Composite	Metal	Metal	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite	Aluminum Rod and Composite
Base Type	Clamp	Clamp	Handlebar	Cup Holder	Seat Wedge	VHB Adhesive	Seat Rail
Adjustment Size	0.25 to 2.5 inches in diameter	0.25 to 1.6 inches	30mm in diameter	2.5" to 3.5" in diameter	1 to 2 inches	80mm Diameter	Standard Seat Rail Bolts
Mounting Location	Poles, Handlebars, tables	Tables, Flat Surfaces, Poles	Handlebars	Cup Holders	Passenger seat and console	Any flat surface	Seat Rail Track
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔	✔	✔

BizMount Arms

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Customer Reviews	4.7 out of 5 stars 196	4.4 out of 5 stars 54	4.7 out of 5 stars 177	4.8 out of 5 stars 95	4.7 out of 5 stars 362	5.0 out of 5 stars 2	4.4 out of 5 stars 8
Price	$7.95$7.95	$12.95$12.95	$8.95$8.95	$10.95$10.95	$19.95$19.95	$18.95$18.95	$24.00$24.00
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Heavy Duty Composite	Metal	Heavy Duty Composite	Metal	Metal	Heavy Duty Composite	Heavy Duty Composite
Arm Length	3.75 inches	3.75 inches	2.75 inches	2.75 inches	6 Inches	4.25 inches	6 Inches
Dual Ball Adjustability	✔	✔	✔	✔	✔	✔	✔
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔	✔	✔

Extend or Customize Your Mount

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Customer Reviews	4.6 out of 5 stars 1,503	4.6 out of 5 stars 1,503	4.6 out of 5 stars 1,503	4.6 out of 5 stars 1,503	3.8 out of 5 stars 69
Price	$15.95$15.95	$9.95$9.95	$12.95$12.95	$14.95$14.95	$17.95$17.95
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Metal	Heavy Duty Composite	Metal	Aluminum and Composite	Aluminum and Composite
Adapter Length	3 inches	2.68 inches	2.63 inches	10 inches	15 inches
Extends your mount	✔	✔	✔	✔	✔
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔

Adapt to Your Needs

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Customer Reviews	4.6 out of 5 stars 516	4.5 out of 5 stars 245	5.0 out of 5 stars 2	4.6 out of 5 stars 147	5.0 out of 5 stars 2
Price	$7.45$7.45	$7.95$7.95	$8.95$8.95	$7.95$7.95	$7.50$7.50
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite
Compatible With	17mm, Garmin GPS Devices	1/4" 20 Cameras / Accessories	1/4" 20 Tripods / Accessories	iBOLT Tablet Holders	AMPS Pattern Mounts
Also Compatible With	iBOLT Phone Holders	Lights, Microphones	Cameras, 1/4" 20 adapters	4 Prong Devices	2- Hole Diamond AMPS
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔

Holding Options

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Customer Reviews	—	4.6 out of 5 stars 348	4.4 out of 5 stars 79	4.9 out of 5 stars 11	4.8 out of 5 stars 51
Price	$8.95$8.95	$25.00$25.00	$28.95$28.95	$15.95$15.95	$14.95$14.95
Ball Joint Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size	25mm/ 1 inch/ B Size
Material	Heavy Duty Composite	Heavy Duty Composite	Heavy Duty Composite	Metal	Heavy Duty Composite
Compatible With	Cameras, Action Cameras	Phones 2-4" wide	Phones 2.75-5" wide	VESA 75 x 75/ VESA 100 x 100	Fish Finder Devices
Adjustable	Remove Adapter 4 Camera Screw	Spring-Loaded Adjustable	Spring-Loaded Adjustable	N/A	N/A
Compatible with 1 inch/ B Size	✔	✔	✔	✔	✔