I love the craftsmanship, quality, and feel of the brushes. Hog hair bristle is ideal for oil painting. The hogs may be from several parts of the world, but the most sought after is from China; thus, this set is accurately identified as “100% Natural Chungking Hog Hair Bristle”. The bristle forms a flag at the tip (and tends to have a natural curve) which helps to distribute the paints smoothly and evenly. The interlocked bristles formed inward to the beautiful white coppers ferrules. You can easily tell that they were fashioned by skilled brush makers, will not fray and come apart. This set is beautifully crafted with ergonomic long, light handle giving you the freedom to be creative with each brushstroke, while maintaining a correct perspective of your subject. The calligraphy on the handle is beautiful; the shape and number are easily identified.I had an issue with the crimp on one of the brushes, and the seller shipped me a new one immediately. They earned my business and I have been looking for more of their products to purchase. This is one of the few sellers/products that I can skip prior reviews, and go straight to check out. Wish ALL of Amazon sellers are like this! This is the ideal set to purchase if you are overwhelmed by the choices out there!