Specification Brand : Quality Reliable Products BulletPoint1 : Fits a 1/2 inch hole. BulletPoint2 : Made of one solid piece of silicone. BulletPoint3 : Great for making sauerkraut and other fermenting projects. BulletPoint4 : Turns your lids into airlock fermentation lids. BulletPoint5 : If you're not completely satisfied simply let us know and we will offer a prompt refund or replacement, no questions asked. CareInstructions : Hand Wash Only Color : White ExternallyAssignedProductIdentifier1 : 0682055870168 ExternallyAssignedProductIdentifier2 : 682055870168 GpsrSafetyAttestation : 1 IncludedComponents : No IsDishwasherSafe : 1 ItemName : 1000 Airlock Grommets Food Grade White Silicone fits Fermentation Kit Plastic Lids ItemPackageDimensions_Height : 12 inches ItemPackageDimensions_Length : 16 inches ItemPackageDimensions_Width : 6 inches ItemPackageQuantity : 1000 ItemShape : Round ItemTypeKeyword : brewing-and-venting-airlocks Manufacturer : Quality Reliable Products Material : Silicone Material1 : Metal Material2 : Glass Material3 : Silicone ModelName : 4SLGqifa-18pc ModelNumber : 4SLGqifa-18pc NumberOfItems : 1 NumberOfPieces : 1000 PartNumber : 4SLGqifa-18pc ProductDescription : QRP White Silicone GROMMETS fit any brand Mason jar plastic caps (1/16" groove). Grommet easily inserts into 9/16" lid hole (1/2" may be too tight, pushing the airlock into the lid may cause the lid to crack; 5/8" may cause a loose fit for the grommet). Grommet center hole is 3/8" and is the standard size for Fermentation Airlocks. THE 1/16" GROOVE IS TOO NARROW FOR FIDO GLASS LIDS. We understand your health concerns. QRP products were developed to help our director overcome prostate cancer. ALL QRP parts and products are BPA-free USDA Food Grade Compliant and are produced by a reputable food container manufacturer. Copyright 2019 Quality Reliable Products, All Rights Reserved. ProductSiteLaunchDate : 2015-06-04T07:00:00.000Z Size : 1- 3" WIDE MOUTH Style : Jar SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 UnspscCode : 52152000