The RAP-B-121BBU connects to RAP-B-121U mounts; it is used as an extra ball to mount an additional device to your current mount.
(RAP-B-121BBU)
M6 Thread with 1" Ball
RAM-B-273-M6U
RRP $19.00
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1" Ball 0.31-24 Thread
RAM-B-358U
RRP $20.00
PVC Pipe Socket with B-Sized Ball
RAP-B-294U
RRP $17.00
Glare Shield Short Arm Mount
RAM-B-177U
RRP $97.00
Alum Strap Base 1 Inch Ball
RAM-B-231Z-2U
RRP $50.00
RAM 12" Flex Arm with Ball
RAM-B-141B-1290
RRP $148.00
Chrome Diamond Plate 1" Ball
RAM-B-238CHU
RRP $49.00
Tough-Mag B-Size 88MM Diamond Ball Base
RAM-B-238-MAG88U
RRP $118.00
Standard Arm Extension Knob
RAM-B-201-ALA1-KRU
RRP $55.00
Double B-Ball Mount Lowrance Elite-5 Elite-7 Ti
RAM-B-101-LO11
RRP $86.00