Sukragraha Adjustable Dual Head Pencil Extender Extension Sketching School Art Writing Tool - Pack of 5 5 X Adjustable Pencil Extender Sliding the ring on nickel plated ferrule help you to adjust the tightness of the extender and holds pencil securely. 2 heads of different sizes, suitable for most triangular or hexagonal pencils Extends the lives of pencils Material: metal+plastic; Color: Random