3M Reusable Half Face Mask 6502QL Medium – Reliable protection in harsh working environments - 1x respirator mask & K0501 70-0707-5798-7 Bag of 2 Rings for combination of dust filters : Amazon.co.uk:
6502 3M Electronic Solutions Division | Mouser United Kingdom
3M 6503QL | 3M 6500 Series Half-Type Respirator Mask, Size Large | RS
3M 6501QL 6500 Half Mask Small |The Face Mask Store
Fitting 3M™ 6500 QL Series Reusable Respirators - YouTube