The RAM-247U-5 is a clamp base with 1.5" rubber ball that will connect to rails up to 5" maximum in width.
(RAM-247U-5)
Dragonfly Adapter
RAM-202U-RYM1
RRP $41.00
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Double Medium Ball Mount with Key Lock Knob C-Size
RAM-101U-L
RRP $169.00
2x2 Inch Square Base 1.5" Ball
RAM-202U-22
RRP $46.00
C-Size Track Ball with T-Bolt
RAM-463-TRA1U
RRP $42.00
Suction Cup 1.5" Ball
RAM-224U
RRP $53.00
Dual T-Bolt Track Base for Spline Posts
RAP-421
RRP $32.00
Dual 90-Degree Pivot Mount
RAP-101-PV4-2P-NKU
RRP $68.00
C-Size Ball 4-Hole Pattern Base
RAM-202U-23
RRP $49.00