If you're cutting in trim, painting window sashes, or doing any detail work, this Wooster Gold Edge brush is a pro favorite for a reason. It's a 1.5-inch semi-oval angle brush, which means the bristles are cut at an angle, giving you a sharp point for getting into corners and making clean lines along edges. The bristles are made from Wooster's special Chemically Tipped (CT) polyester. They're super soft to lay down paint smoothly and eliminate brush marks, but they also have just the right amount of stiffness to hold paint well and give you control. It works great with all kinds of paint – latex, oil, enamel, you name it. It has a sturdy stainless steel ferrule (that metal part) and a comfortable hardwood handle. This is a semi-pro quality brush at a very reasonable price. It'll give you way better results than a cheap brush, it's easy to clean, and it'll last for many projects if you take care of it. A must-have for any DIY painter's toolbox.