Rectangular base, 1 in.
2.5x5 cm (1x2 in,), 1 in. ball (size B) - RAM-B-202U-12
This rectangular base is a good foundation for your individual RAM Mount system.
The base measures 2,54×5,08 cm (1″x2″) and has two holes at a distance of 3.81 cm (1.5″).