It is a hub for after 36H exterior of Shimano.

[Product Specifications]
● axis length: 192mm
● spoke holes: 36H
● right sleeve: 16mm (7 stages for: RH-IM11-7)
● brake type: Roller brake

Maker	Shimano
brand	Shimano

Shimano (SHIMANO) RH-IM11 36H 524-11141 7-stage for the hub roller brake after the exterior (RH-IM11-7) 192mm [bicycle cycle leisure outdoor]