Tips was made of quality soft rubber,durable fiber materials, the size was 0.2 inch and 0.28 inch diameter is precise and sensitive, no lag and no scratches!
Replacing is easy and can be done within a second without tool.
The tip size not vary, it is Only for Granarbol 4-in-1 Stylus Pens for Touch Screen.
To find fit-able stylus for these replacement tips, please search ASIN: B098DMLL4Y on Amazon.or Search Key words " Granarbol 4-in-1 Stylus Touch Screen Pen " on amazon.