RAM® Tough-Mag™ 66MM Diameter Magnetic Ball Base

Part#: RAM-B-MAG66U
UPC: 793442008917
$42.49
RAM® Double Socket Arm - B Size Medium

RAM® Double Socket Arm - B Size Medium

$20.49

Overview

Looking to mount to a metal surface? The RAM® Tough-Mag™ 66mm diameter base is the powerful and durable solution you've been searching for. With a B size ball screwed into a ¼-20” threaded post, simply attach a compatible double socket arm and your desired RAM® device holder. This base features an industrial-strength N35 grade magnet and rubber coating that protects the metal surface you're attaching the RAM® Tough-Mag™ to.

product dimensions:

Overall Height: 2"

plate size:

2.6" Diameter

ball size:

B Size (1")

weight capacity:

Standard Use: 2 lbs
Heavy-Duty Use: 1 lb

materials:

Marine-grade aluminum
Rubber

packaging type:

Poly Bag

Weight:

0.71 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

Print

Documents

Knowledge Base: Ball Sizes

QUESTIONS & ANSWERS

Have a Question?

Ask a Question

  • How thick is the magnetic base?

    It is about 7.90MM thick

  • Does this come with a metal plate and adhesive to use on a plastic dash?

    The RAM-B-MAG66U does not come with the metal adhesive plate; you will need RAM-343-PU.
RAM® Tough-Mag™ 66MM Diameter Magnetic Ball Base
$42.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size — this product 1" ball
  • C Size 1.5" ball
  • D Size 2.25" ball
  • E Size 3.38" ball

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size Ball Diameter Max Load* Best For
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B — this product1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Add-on & Accessories

B Size Double Socket Arms
See All
RAM® Double Socket Arm - B Size Medium RAM-B-201U $20.49
RAM® Double Socket Arm - B Size Long RAM-B-201U-C $29.99
RAM® Double Socket Arm - B Size Short RAM-B-201U-A $18.49
RAM® Composite Double Socket Arm - B Size Medium RAP-B-201U $13.99
RAM® Composite Double Socket Arm - B Size Short RAP-B-201U-A $11.49
RAM® 10.5" Double Socket Arms - Long & Medium B Size RAM-B-201-201U-C $65.99
RAM® Composite Double Socket Swivel & Ratchet Arm RAP-B-200-2U $28.99
RAM® Composite Double Socket Swivel Arm RAP-B-200-12U $19.49
RAM® Double Socket Arm with Dual Extension and Ball Adapter - B Size RAM-B-201-201U $55.49
RAM® Pin-Lock™ Double Socket Arm - B Size Medium RAM-B-201-SU $27.49
RAM® Chrome Double Socket Arm - B Size Short RAM-B-201-ACHU $50.99
RAM® Chrome Double Socket Arm - B Size Medium RAM-B-201CHU $65.99
RAM® Double Socket Arm with Key Lock Knob - B Size Medium RAM-B-201LU $61.99
Previous Slide Next Slide
Steel Adhesive Plate
RAM® Steel Adhesive Plate Adapter for Magnetic Mounts RAM-343-PU $8.49