Innovative Dual-Tip Design: Each blending pen comes with a dual-tip design to offer enhanced flexibility. The black tip of the larger pen is perfect for shadow-side transitions while the white tip is perfect for transitioning halftones into light and dark sides and blending light sides. The black tip of the smaller pen serves to handle details, enhancing the visual appeal of your sketches. Package Inclusion: This set comprises 4 blending sponge pens available in 2 key sizes, apt for multiple drawing needs. The bundle enables a sufficient supply for your personal projects and art classes. Please note, the white felt tip might contain black wool; however, it does not impede the product's functionality. Superior Quality Material: The blending pens are carefully designed with premium quality sponge, felt, and plastic pole for . The blending sponge pens come with a black tip made of sponge and a white tip made of felt, aiding in seamless blending. The robust plastic pole enhances grip and is washable and reusable. Apt Sizes for Various Needs: Our blending pens come in two sizes to cater to different art requirements. The larger pen features a nib diameter of approximately 0.47 inch/1.2cm with a total length of 5.9 inch/15cm, while the smaller one comes with a nib diameter measuring approximately 0.24 inch/0.6cm and a total length of 5.51 inch/14cm. Broad Usage: The blending sponge pen set is a perfect tool for beginners, students, and art aficionados, perfect for a range of applications like art projects, school assignments or regular crafts. It assists in easy blending, colorization, and creating stunning gradients and shading, giving your artwork a professional touch.