Specifically designed for use with Wacom Bamboo Stylus, this highly responsive firm nib is for users who like to apply on–screen pressure when writing and drawing on a mobile device. Delivering a bolder, smoother feel on a glass surface, the nibs easily slide into the barrel of your pen. Each pack includes three firm black nibs. Wacom Bamboo Stylus works with Bamboo Alpha, Bamboo Duo, Bamboo Pocket, and Mini styluses.