Round base, 1.5 in.
6.35 cm, 1.5 in. ball (size C), with steel reinforced bolt - RAM-202U-IN1
This round base is a good foundation for your individual RAM Mount system.
This base has a diameter of 6.35 cm (2.5″) and has four holes in industry standard AMPS (rectangular array, 30×38 mm) and three holes in 120-degree angle. The base may also be used for attachment of device carriers without ball (see description of that products).
The base corresponds to the standard base RM-104-15202, but has an additional reinforcement by a steel bolt between base plate and ball.