What is this?Stylus disc & fiber pen tip universal replacement is a multifunctional tool for precise stylus pen touch screen input. It can be used for various sketching, drawing, painting, writing, gaming, etc. on all touch screen devices such as cellphones and tablets, and is also suitable for professionals in the workplace, such as designers, architects, engineers, etc.What will I get?Stylus fiber pen tip, is in size of :8mm/0.3 inch pen head dia, M5 thread, 13mm/0.5 inch total lengthStylus disc pen tip, is in size of :7mm/0.28 inch pen head dia, 2mm/0.08 inch hole dia, 15mm/0.