I have two Magview B1 adapters. One hasn’t been used. The other one was on my binos for a short time. I didn’t need the sizing strip to fit my objective, as it’s only needed for binos under 41mm. I misplaced it, so the second adapter won’t have a sizing strip. I’ll sell both of these together along with 4 magnetic plates for $75 tyd. Buyer covers PayPal or Venmo fees.