Same fast rolling tread as the standard Drumlin with a special 4-ply casing paired with K-Shield belting for a more robust, heavy duty tire for cargo and E-bike use4PLY - 4 ply casing for a robust durable tire and reduced chance of flats from pinches and puncturesKS - K Shield, A 3mm layer of aramid and ceramic particles inside the tire under the tread area only Kenda`s entry level beltingEBIKE50 - has achieved a passing rating for use with E-Bikes up to 50kph and is ECE-R75 approvedStandard24x2.4507WireBeltedBk/Blk75124060x44PLY/KS/EBIKE50/REFYes