Kolinsky #6 Red Sable-KKolinsky Brushes #6 Red Sable K These are legendary natural Kolinsky Brushes. These brushes have a small bead inside that helps manage the humidity on the brush. Youll see the difference in your work immediately after using Kolinsky Brushes. Features: Available Sizes: #000, #00, #0, #1, #2, #3, #4, #5, #6, #7, #8, #2 Flat, #4 Flat, Big Brush Shipping time for this product is between 3 15 days