• TRANSFORM YOUR MASON JAR: This attachment creates the perfect fly trap without sacrificing your kitchen aesthetic with unattractive sticky hangers. • FITS REGULAR-MOUTH canning jars, recommended jar size: 16 oz. Fits regular mouth Ball, Kerr, Kilner, and Anchor Hocking 16 ounce mason jars (Jar not included). • STURDY CONSTRUCTION: This attachment is made from durable plastic, meaning pests are no match for this trap lid. • EASY TO USE: Simply slip the attachment over the mouth of the mason jar, and screw on your lid. Simple, effective, and ready to go when you are. • REUSABLE: Unlike typical sticky traps, this mason jar fruit fly trap lid can be used over and over again. Tired of flies on the wall? Transform your mason jar into a sleek fly catcher. Stop crowding your kitchen with unpleasant sticky hangars or cumbersome traps, simply slide this lid attachment onto your mason jar and let it do the job without sacrificing countertop space or aesthetics. #RaisingTheJar