Shiftmate 7

For front derailleurs: the Shiftmate 7 from Jtek Engineering
The Jtek Shiftmate adapts the transmission ratios of incompatible shift components to each other. The shifter cable runs through the Shiftmate, which uses a special shifting wheel to change the cable ratio and match the shift levers.
With Shiftmate 7 (Shiftmate Straight) you can combine Shimano and Campagnolo triple shifter with MTB front derailleurs and cranks or MTB front derailleurs with Road Triple cranks.
Jtek Engineering was founded in 2003 in the USA and is now based in Great Britain. It offers high quality and well thought-out products that can be used to solve compatibility problems in an elegant way.

Combinations:
Shifter:Campagnolo/Shimano Road 3-speedCrank/Front Derailleur:Shimano MTB (Off-road) 3-speedShiftmate Derailleur Pulley Groove:small
Shifter:Shimano/SRAM MTB 3-speedCrank/Front Derailleur:Campagnolo/Shimano Road 3-speedShiftmate Derailleur Pulley Groove:large
Note from the manufacturer:
With the Shiftmate 7, Campagnolo 11-speed Ergopower™ shifters can also be combined with wide Shimano 11-speed cassettes. The Shimano 10-speed rear derailleur was originally designed for 36 T only, however 40 T or 42 T may be possible by adjusting the B-stop screw. This solution does not work with Shimano 11-speed rear derailleurs.

Shifter:Campagnolo 11-speedRear Derailleur:Shimano MTB 10-speed Shadow/Shadow+Cassette/Gearing:Shimano/SRAM 11-speedShiftmate Derailleur Pulley Groove:smallFeatures:ideal for straight cable mount or mounting with cable stopsCNC manufacturedsealed ball bearinghard nickel-platedManufacturer Numbers:gold-silver:49429black-green:19045Contents:1 x Shiftmate 7