This item has been washed but has been used a few times, so please consider this before purchasing. It was easy to cut with! The diameter of the cutting part is 8cm, and the handle is about 9cm or larger. Material/Ingredients: Unknown. It came with a blade cover, but you need to be very careful when removing it. (Upon arrival) Be sure to wash this item before using it! Please understand the above before purchasing! I will use Yu-packet Mini for shipping!