Shopping for replacement cork for large 1950's heavy-duty Stanley Thermos. After first order placed, and one week wait time, the two corks ordered were to small for thermos neck.. Second order was 4 various larger sizes and arrived in 2 days! Both size 18 & 19 premium ××× corks are perfect fit. Keeping all in my glass cork jar for future needs. Great prices, great selection, great service.