It is a bar end shifter corresponding to the MTB derailleur whose existence has disappeared since 10th speed.
The bar end shifter compatible with the Shimano 11-speed MTB derailleur manufactured only by microSHIFT enables the use of the Shimano MTB derailleur with a drop handle.
Cassette Compatibility: 11 Speed
Front Shifting: Friction Double / Triple
Rear Shifting: Index / friction transferable
Bracket Material: Aluminum
Lever Material: Aluminum cold forged / anodized
Shift Cable: Stainless Slick
Compatibility: Shimano 11 Speed MTB Shifters Compatible
* Please note that in general, bar end shifters can be used mainly for drop handles with a bar diameter of 23.8 mm, and cannot be attached to flat bars with a bar diameter of 22.2 mm. However, since the inner diameter of the handle that can be installed is 19 -22 mm, it may be possible to install it on some promenade mustache type handles. Make sure the inner diameter is 19-22 mm.