I purchased the AR-E10 IEMs and tried to attached the Mee 2 Pins and they would not fit. There is a slight size difference as the Mee BT is larger then the access port of the AR-E10 IEMs. So that sucks. I assumed that all 2 PINs were the same size and would be a Universal fitment. Wrong. So this was a wasted purchase thus far.