"A simpler method of copying various shapes, very suitable for tile bonding, laminate and carpet cutting, ceramic and tool mold making, etcPulley and pointer design, both ends can be used. Drawing on the pulley side is smoother, while drawing on the pointer side is more accurate and easier. The pencil holder can be moved up and down for easy replacement of the styling endThe operation is simple and can be adjusted with one hand. Fix the pencil in the middle and draw as you push it. It is easy to draw lines without making mistakesThe tightness can be adjusted according to your needs. It is especially suitable for drawing the contours of irregular and complex objects. It can be locked and fixed after each adjustment to ensure accurate accuracyAdjustable pencil holder, can holder 2-12mm marker pens Material Abs,Metal"