High Stength Composite
The “U” in the part number reflects product packaged in poly bag.
– See more at: http://www.rammount.com/part/RAP-SBA-RRU#sthash.IYxIxeyB.dpuf
The RAP-SBA-RRU consists of a 1.43″ overall length arm with double RAM-to-RAM balls at each end. This arm serves as middle attachment point between the RAM-HOL-UN7U and RAP-SB-238FU.