The pencils are super durable. The pack also includes a brush with synthetic bristles which is ideal for spreading the color. Partnering with Canson and Daler-Rowney, the Graduate line contains an affordable range of art supplies fit for artists in the studio or art students in class. Aquarell watercolor pencils can be easily blended and layered to create stunning effects. They are a great option for artists who want to paint on the go. These pencils eliminate the need for carrying multiple brushes and water containers since they can be used directly on paper and then activated with water using a brush. Tackle details confidently with fine lines and control the amount of gradient or wash using a watered brush.Details: Assorted colors 3.3 mm lead size Set of 36 pencils Includes metal box and synthetic brush Easy to sharpen Easily to blend PEFC certified cedarwood Suitable for travel, outdoor sketching and painting sessions outside the studio