eCosmetics is an authorized retailer of Glisten. All our brushes are made from synthetic fibre with a wooden handle. The thin bristles allow for precise lines and detailed drawing. Size F1 - This is a medium flatu00a0brush, great for cleaning up messy lines.This brush has had its name changed from 4 to F1 it may be labelled as 4 when you receive it as we transition over.Size F2 - This is a large flatu00a0brush, great for Split Liners!Size F3 - This is a medium flatu00a0brush, great foru00a0creating ombre winged liner (using the split liners)Size F4 - Great brush for Spectra Paints or to create ombre styles with Split Liners! Size:0.17oz Color:F3