Package includes: coming with 100 pieces of small replacement brushes in total(not include lid) Size :the size of small replacement brushes is approx. 0.47 x 2.2 inches, perfect for most 15ml dipping powder liquid bottles, please make sure it's the right size for you before you choose it Easy to use: remove the bad brush from the lid and use new brush to replace, improve your work efficiently Prevents the brush from hardening: firstly, you can apply dip activator on the brush,and then apply dip top coat after 10-15 seconds.Secondly, we should put brush inside the bottle and tighten it after we apply dip base or top coat Application: perfect for dip powder liquid kit, such as dip powder base coat, top coat and gel polish