3 of 2021 February 9, 2021 Bulletin #3 of 2021 Products Affected KMB 18B BandMask®, KMB 28B BandMask® SL 17B, SL 17C, SL 27 and KM 37 helmets 560-070 & 560-071 Port Retainer Change of Material from Polished or Chromed Brass to Polished Stainless Steel