Brand Changmaius Material Plastic Surface Recommendation Plastic Color Black, White, Silver Special Feature Reusable Number of Items 2/6/12/24 Manufacturer Changmaius Ample Quantity: the package includes 2 pieces of blending stumps, coming in 2 sizes; This ample quantity makes it suitable for group activities in art classes and can also serve as a useful addition to your art kit, ensuring that you will always have pens on handy while working on your masterpieces. Due to the manual processing of natural wool, the white felt tip may contain some black wool, but does not affect the actual use Practical Double Headed Design: the blending sponge pen features a practical double headed design, the black tip of bigger pen is applied for shadow side transition, ideal for preliminary blending, the black tip of smaller pen is utilized to handle the detailing, the white tip of bigger pen is suitable for transitioning halftones to light and shadow sides or blending the light side, making your sketch more dynamic and visually appealing, you can use the white tip of smaller pen on detailed sides Appropriate Size for Application: this sketch rubbing sponge brush comes with 2 different sizes to meet your needs; The bigger pen measures about 0.47 inches/ 1.2 cm in tip diameter and about 5.94 inches/ 15.1 cm in total length, while the smaller pen is about 0.24 inches/ 0.6 cm in tip diameter and about 5.51 inches/ 14 cm in total length; For an artist or student, this variety in sizes means more room for creativity Reliable and Comfortable Material: the sketching wipe pen is made of quality sponge, felt and ABS, the black tip is made of sponge, and the white tip is crafted from felt, helping to blend different sides smoothly; The sturdy ABS shell ensures durability, comfortable grip, and long service life, providing a pleasant experience Wide Range of Uses: this blending sponge pen set is an ideal and useful tool for art enthusiasts, students, or beginners; It allows your blending and shading effortless and convenient, creating beautiful gradients and shadows in your artwork; The pen is suitable for most occasions, whether it be art projects, school assignments or hobby crafting