Park Tool IR-1.3 Internal Cable Routing Kit

?* Di2 EW-SD300-specific adapter — Specially-designed connector clips into the end of Shimano E-tube Di2 shift wire, and is perfectly sized to fit into frame holes as small as 6 mm* Double-threaded barb — Securely attaches new housing or hydraulic hose to existing housing or hose* All guide cables have been shortened from 250 cm (98") to 188 cm (74")* The case has been upgraded to a round screw-top case, which fits the coiled-up cables better* Barbed adapter — Threads into the end of brake & shift cable housing as well as hydraulic brake hose* Rubber adapter — Securely holds electronic shifting wire * Reverse-polarity magnet — feeds into the opposite end and meets the leading cable in the middle, aiding in routing on frames with tricky interior shapes