-BEGINNER FRIENDLY: With only 2 pieces, this grinder is perfect for beginners or for anybody who is just looking for a no-nonsense piece to get the job done -DURABLE CONSTRUCTION: This piece is made from sleek aluminum, ensuring that it will serve you well for years to come. Unlike other grinders that might chip or peel over time, this mason jar attachment comes with sharp teeth that are perfect for getting great results, every time -GOES WHERE YOU GO: Because this grinder is an attachment, it’s able to screw right onto any mason jar, so you can store and grind in the same convenient place. Perfect for your herb, your spices, and more -SPILL-RESISTANT LID: In addition to the uniquely designed top built to improve your grip, this piece comes with a magnet so that it seals shut while you grind, which dramatically lowers any chance of spilling your herb -WHAT IS INCLUDED: Lid only, jar not included. Fits regular mouth mouth canning jars. The lid is not dishwasher safe, hand wash only