This stainless steel grate is specially designed for the round MEDIUM Shichirin and comes as a convenient spare part. With a diameter of 29.5 cm, it fits perfectly in your Shichirin and provides a sturdy and reliable grilling surface. There is always a small gap between the grate and the Shichirin. This is completely normal and intentionally designed to prevent the grate from getting stuck and to make placement and removal easy and safe. This ensures you can enjoy an optimal grilling experience every time without any hassle.