Cylindrical hair swatch is the most common used hair swatch type. It is commonly used on various claim test, evaluation test. 

Nylon cable tie is used to bound hair on roots, and it can be glued on root to prevent hair from coming off. 

Product name explanation：

For example, "Natural Chinese hair, 27cmx1g, free 25cm" means it is made of natural Chinese hair, total length is 27cm, net weight of hair is 1gram and hair free to comb is 25cm long.

Common used Cylindrical swatch types：
Natural Black Chinese / 18cmx1g, free 16cm
Natural Black Chinese / 18cmx3g, free 16cm
Natural Black Chinese / 27cmx1g, free 25cm
Natural Black Chinese / 27cmx2.7g, free 25cm
Level1 bleached Chinese / 27cmx1g , free 25cm
Level2 bleached Chinese / 27cmx1g , free 25cm
Level3 bleached Chinese / 27cmx1g , free 25cm