SHIMANO Nexus 7 Speed (SG-7C18) Internal Hub w Coaster Brake. Shimano Nexus 7 Speed (SG-7C18) Internal Hub w Coaster Brake. 36 hole, 132mm spacing 7 speed Nexus with Coaster Barke. Includes Shimano Revo Nexus shifter (SL-7S10). Includes Trim Kit also.