Description Stock up on canning supplies! These two-piece metal lids fit standard (not wide-mouth) or wide-mouth canning jars, including our Jelly Jars, Pint Jars, and Quart Jars. Also compatible with most regular mouth and wide-mouth canning jars on the market. The flat, metal, single-use lids have a rubberized ring that softens and seals when placed on the glass jar and heated, creating a safe, secure, air-tight seal. The screw bands may be reused again and again. The shiny silver lids are printed with our logo and have plenty of room for writing contents and the date.