Each piece is 2cm wide! We often deliver them in 4cm pieces, so please cut them in half to 2cm before applying. [52cm, Cool Brown C4] *Level Scale: 5-tone ash color. Merit Hair: This is our original seal extension, a perfect blend of high-quality Japanese-made artificial hair and the finest human hair. *If you want to increase the number of pieces, please leave a message in the comment section. Although it's Merit Hair, it can be styled with curling irons and flat irons, and the quality is very close to human hair, so you can rest assured. Over 90% of Remy hair on the market is hybrid. The quality of Remy and hybrid hair is exactly the same, making it impossible to distinguish even for professionals, so please be careful not to be deceived. Even with artificial hair, the quality can be significantly lower if it's made in China. Please be aware of this as well. We receive many opinions that the color is different from the photos, or that it appears lighter or darker than the photos. Due to the nature of seal extensions, the appearance varies depending on the time of day, the way light hits it, and the lighting. There are also individual differences in quality, so please purchase at your own risk. Occasionally, buyers demand unreasonable returns, but we will not accommodate them. (Please be especially careful if you are buying during the high season.) Especially, there are people who try to intimidate us with the reason that the color is different from what they expected after changing the number of pieces, but please confirm that you are purchasing at your own risk.