Here's the first one on Amazon:
GasOne 50140 4 FT Propane Hose 1 lb Converter-16.4 oz to 20 lb https://www.amazon.com/dp/B073KV4WLJ/ref=cm_sw_r_cp_api_i_pPaAFbVR43M2S
September 20, 2020 at 10:05PM
via reddit https://www.reddit.com/r/preppers/comments/iwrb7i/how_to_use_coleman_camp_stove_with_20_lbs_propane/g6238f2?utm_source=ifttt