Problem Solvers Under Stem Mount - Shimano Di2
Lightweight alloy headset spacer with nylon body (9g) Compatible only with Shimano Di2 Junction Box 95mm length, 44mm width, 6mm height Problem Solvers Under Stem Mount - Shimano Di2, 6 degree, Black 6 Degree angle Problem Solvers Under Stem Mount - Shimano Di2, 17 degree, Black 17 Degree angle.The Under Stem Mount allows riders to secure a Shimano Di2 Junction Box to their bike quickly and easily without the need for zip ties, duct tape, or other unreliable attachments.