Kilner Wide Mouth Canning Jar 12 Oz Ferrari's First EV Is Here! Meet the Polarizing, Powerful and Seriously. The Kilner Wide Mouth Canning Jar 12 Oz 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. Details and Materials Material: Glass, Stainless Steel Dimensions: 3. 5 x 3. 5 x 4. 9 Set of 6 Contents6 x Kilner Wide Mouth Canning Jar 12 Oz6 x 2 Piece Metal Lid1 x Kilner Club Membership Leaflet Use and Care Dishwasher Safe Do not pour boiling water into your jars