Approved and workable on iPad, BlackBerry storm, Google Phone G1, Apple iPhone, iPod touch, iPhone 2G/3G, iPod touch, and any capacitive touch panel device This stylus ball tip is upgraded as softer as finger touch It's easy to slide, tap, drag and hand write, for those with big fingers or have long nails, this is an essential tool for industrial or for consumer use Keep this super stylus to work on all of the capacitive devices There are 2 different materials of capacitive styluses in the market One is made of silicone, it's easy to tap but difficult to slide/drag The other one isrubbretip made by HongtianIt's convenient to tap, slide, drag and hand write, please contact us right now Round tip diameter: 7.5mm Length: 110mm Made inchina RoHS compliant