Fangrui Product Details Exquisite Material: Rub sponge is made of high-quality latex sponge, which is washable, scratch- and wear-, and can be rubbed evenly and delicately. Rubbing is smooth and natural, does not dirty hands, is more breathable, and makes the picture more vivid. Ergonomic Design: The blending stumps handle is made of ABS material, which is more flexible, comfortable to hold and not easy to deform. The upgraded design of the streamlined concave conforms to ergonomic principles, making it easier to hold and provide smoother drawing. 2 Kinds of Sketch Rubbing Sponge: Can be used to apply or remove graphite or charcoal to create desired texture. Pointed sketch wipes erasers are suitable for wiping details and wiping delicately. Round-head sketch wipes erasers are suitable for wiping large areas. Main Functions: The blending tool set is used to create texture effects in paintings, for creating atmospheric effects such as clouds or fog, and for tracing textures and patterns where lines have been completed. Portable d