The arms are for 1" ball and I had ordered 20mm ball mount. So now I am stuck with a mismatch. I wonder if there is an adaptor from a 20mm ball to a 1 inch arm. Thsi might be easier than trying to return the arms and get the right ones.
Pay very close attention to the size
Without boring anyone with details the mounting base balls are 20mm. This coupler is for 25.4mm balls. Not sure why in the world they don't all interconnect but I'm sure there is a reason I can't think of. I assumed it was plug and play but you have to be very careful as I just made an expensive mistake. My assumption and not reading the details will not diminish this product from a 5 star rating. BMS is a fantastic company and I will order the correct connector that I need after triple reading the details.
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