• Sensitive optical pencils ideal for drawing, writing, clicking, and reading on touch screens. • Compatible with all devices with capacitive touch screens. • Rubber tip design, quiet and highly sensitive. • Pencil dimensions: 8mm x 145mm (0.31 inches x 5.7 inches). • Includes replacement tips of 7mm (0.28 inches) and 5.5mm (0.22 inches). • Double head with two rubber tips of different sizes for greater versatility. • Soft rubber tips that do not damage the touch screen. • Easy tip replacement without tools, includes 6 replacement rubber tips (3 small and 3 large). • Perfect for playing, writing, painting, and clicking on tablets and mobile phones.