Each piece is 2cm wide! We often deliver them in 4cm pieces, so please cut them in half to 2cm before applying. [52cm - Black C1] ※ Level Scale: 1 tone. Merit Hair: This is our original seal extension, a perfect blend of high-quality Japanese-made artificial hair and the finest human hair. 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 please 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. Please also note that some Chinese-made artificial hair can be of significantly lower quality. We receive many opinions that the color is different from the photos, or that it appears lighter or darker. Due to the nature of seal extensions, the appearance can vary depending on the time of day, the lighting, and the individual. Please purchase at your own risk, as there are individual differences in quality. Occasionally, buyers demand unreasonable returns, but we will not accommodate them. (Please be especially careful if you are buying during peak season.) In particular, some people try to intimidate us by changing the number of extensions and claiming the color is different from what they expected. Please confirm that you are taking responsibility for your purchase before buying.