Shimano SG-3C41 Coaster Brake Shoe Unit Shimano Nexus SG-3C40 7 & 8-Speed Coaster Brake Hub Shoe Unit This Brake Shoe Unit can also be used on the following internal hub gears: – Shimano Nexus SG-3C41-DX – Shimano Nexus SG-3C40-NTW – Shimano Nexus SG-3C40-DX – Shimano Nexus SG-3C40 – Shimano SG-3C01