1、3 Sandpapers: Sandpapers in this sketching tool set can sharpen the tip while cleaning the pen, you can grind the pigment into a powder. 2、Premium Paper: These blending stumps are made of premium paper, which can be easily sharpened with sandpaper sharpen pads blocks and you use a napkin to wipe it away. 3、Wide Application: These sketch drawing tools are suitable for smudging, blending or smoothing pastel, charcoal, chalk and pencil artwork. 4、Practical Tools: These blending stumps can soften the lines and mix colors, create shadows and achieve hazy view effect. 5、Perfect Gift: These sketch drawing accessories are perfect gift and practical tools for children, students, artists, sketch drawing beginners, learners, and so on. Item Type: Sketch Drawing Tools Material: Paper, Eraser Sandpaper Function: Pencil, Color Chalk, Sketching Paper and Pencil, Sharpening Eraser Size: Approx. 4.4 x 3.7cm / 1.7 x 1.5in ( Manual Measurement, Slight Error May Exist ) Pencil Extension Tool Length: Approx. 13.4cm / 5.3in ( Manual Measurement, Slight Error May Exist ) Blending Stumps Length: Approx. Large: 14.9cm / 5.9in. Medium: 15cm / 5.9in, Small: 12.4cm / 4.9in ( Manual Measurement, Slight Error May Exist ) Sandpaper Size: Approx. 16 x 2.9cm / 6.2 x 1.1in ( Manual Measurement, Slight Error May Exist ) 3 x Eraser 3 x Pencil Extension Tool 18 x Blending Stump 3 x Sandpaper