The Pinarello Seatpost Internal Battery Mount for Di2 is available in the color Black and in one size. (note picture attached). Please note that this mount is only compatible with the Pinarello Dogma 60.1, Dogma 2, and Dogma 65.1 seatposts. Additionally, it is only designed for use with the Shimano Dura-Ace 9070 SM-BTR2 Internal Battery. Actual weight: 22g.