Ball Wide Mouth Caps Pk/8 Catalog Home Canning Supplies Ball Wide Mouth Caps Pk/8 UPC : 014400370007 SKU : 12101175 Model Number : 37000 Description Our screw-on plastic caps turn wide mouth Mason jars into practical storage containers. Each box includes 8 dishwasher-safe plastic caps. Rates Please contact us for current pricing and availability.