Purdy 140080325 2.5-Inch XL-Dale Paint Brush
Purdy has long been considered the number one choice of painting professionals. Almost all of the brushes I mentioned having for over 20 years are Purdy brushes, and they certainly haven't compromised that quality in recent years. A Purdy brush bought today is identical to the same model bought 20 years ago.
This brush is a 2-1/2 inches wide 1/2 inches thick angled brush with flagged bristle ends. The ferrule is made of copper to prevent rusting. It comes with an overlong handle, which is nice when one needs to step back from their work to see how the light is affecting it or to look for spots that dont have sufficient paint.
Of all the brushes in a painters kit, this is the one that will get used the most, warranting the purchase of the best quality brush that you can buy.