The Shimano Di2 Wire 12 Speed EW-SD300 800mm E-Tube Wire is a high-quality component for electric bikes. Made by the reputable brand Shimano, this wire is designed for efficient and reliable connectivity for your 12-speed electric bike. The 800mm length ensures durability and flexibility for easy installation and maintenance. Perfect for those looking to upgrade their build kit or gruppo with a trusted and well-known brand like Shimano.