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We have to unscrew the brush and the tip is inside which then screws on.
Portable, travel version of the da vinci cosmotop spin series 5580 round
5 diameter cosmotop spin holds more water than any other synthetic
Outer casing protects brush from being damaged, fits in all portable watercolor sets
Available from sizes 1 to 12. Certified green manufacturing at the da vinci factory in germany
Series 1573 is da Vinci's best selling CosmoTop Spin Travel brush. Put in your pocket, your handbag, watercolor set or easel and you are ready to go The hard casing around the brush is virtually indestructible. Excellent for Watercolors, Illustration, Animation and Rendering. Made in Germany.
da Vinci Travel Series 1573 CosmoTop Spin Watercolor Brush Round Synthetic with Protective Case Handle 6 - B00409FCLE