This art set is made of PP and sponge, which have excellent durability, will provide you with good service. This art set is practical and function, simple structure and easy to use, suitable for professional or personal use. Features -Color:Black -Material:PP,Sponge - Size: 17.00X2.00X1.00cm/6.68X0.79X0.39in -Note:Without replaceable sponge eraser. - Sketch trimmer erase sponge wiper pens are designed for those who love sketching. - The sketch wipe's handle is smooth, the sponge pad is easy to install and remove - With fine workmanship, sketch wiper tools are comfortable to grip and reduces fatigue, allowing artist to draw more efficiently - Softer and flexible texture sponge pad is gentle on your paper and won't damage or smudge your artwork - The art has ergonomic design for a comfortable grip, reducing hand fatigue and allowing you longer periods Package list: 4 x Art Blenders