Hub rear DC902SB-B12-S4S-1S-CARGO, E-MTB, BOOST, polished anodized black, 36H/14G, Alloy axle 12×148, w/o QR, 5xNBK bearings, Ratchet Ring 40T, Shim. Steel, H-1S type, (404-1S system) cassette body (E440-1S), 4-Pawls, black side caps, with Novatec Laser N logo, OEM