The Kilner Wide Mouth Canning Jar is perfect for preserving whole fruits and vegetables as the wider opening allows for easy filling. Incorporating an easy to use metal screw top lid made up of two pieces- a replaceable vacuum seal and a metal screw band to secure the seal. Featuring embossed volume indicators on the side of the jar."The Kilner 12 Fl Oz Wide Mouth Canning Jar is perfect for preserving whole fruits and vegetables as the wider opening allows for easy filling. Incorporating an easy to use metal screw top lid made up of two pieces- a replaceable vacuum seal and a metal screw band to secure the seal. Featuring embossed volume indicators on the side of the jar."