The right side holes have bolts for a bracket you need to remove prior to installing the hitch. This charger comes to you in a right-triangle. I threw them out. We found when we purchased our latest Apple products, that they came with USB -C cables but no adapters. Skip this if you already know but for the record, there are two types of noise cancelling:1) "passive noise cancelling", "noise isolating", or "sound blocking" means that you have a physical item blocking some, most, or all the sound/noise from your ear canal. Im wondering at this $33. Avoid avoid avoid. The crystals are apart which makes is less shiny. Amazon processed the refund immediately. I went to menards and got a 6mm bolt, nylon nut, and split locking washer that fit my clamp.