This all aluminum mounting arm is an awesome adaptive solution when converting other 1" compatible ball mounts or cradles, to our 20mm Enduro System.
This modular arm measures in at 4.75" in length from end to end.
We also offer an arm extension that can increase the length of the arm by 3.75". (Arm Extensions Sold Separ)
I bought this mounting arm as an interface between my Honda Africa twin motorcycle fairing and my GPS mount. So far it is working flawlessly. I highly recommend it for anybody who needs to go from a 20 mm ball to a one inch diameter ball.
Does as expected. Everything tight. Hopefully it remains so.