This sturdy plastic box has three different sized circular indents lined with a non-slip material in which a jar or bottle can be placed to make opening easier. Simply place the jar or bottle in the best fitting hole - and it will be gripped, leaving both hands free to twist the jar or bottle lid. Can be used free-standing, mounted on a board or in a drawer with jars and bottles of 44 - 108mm (1.75 - 4.50") in diameter.