2 Pcs Crystal Clear Acrylic Pen Holder Stand for Drawing Pens & Nail Art Brushes - Organize Your Nail Gel Polish Pens, Art Brushes & Makeup Tools - Perfect for Salon, Home Studio & DIY Manicure Station

I watch tutorials on a web site and one of the artist said the best way to dry the brushes is using products like this, where the brush is laid down horizontally. I’m using both blocks in the package together to keep the top and bottom of the brushes at the same height. They are working. The brushes fit. I have a set of nail art brushes that fit also, but these will mostly hold paint brushes.They are clear hard plastic or acrylic with half circle grooves that the brushes fit into and the bottom is flat so it sits stable on the desk. There is enough space between the grooves to accommodate medium width painting brushes. I would say which size brush, but most companies aren’t consistent to other companies. There are no standards.