Park Tool IR-1.2 Internal Cable Routing Kit 

IR-1 speeds the internal frame routing of electric wires, shift cable/housing, brake cable/housing, and hydraulic tubing on carbon fiber, Ti, and aluminum frames.

• Opposite polarity magnets on cables seek and attach inside frame tubes, making it easy to route through frame entrances and exits. Works with any size frame including tandems
• Updated to include a dedicated E-tube Di2 cable connector that easily pulls through a 6mm frame hole
• Compatible with Campagnolo EPS systems with included rubber boot