Low uniform tread profile offers minimal rolling resistance, while edge knobs that are larger and hooked to give you maximum traction in the corners RS3 rubber compound allows for very low rolling resistance, amazing grip, and a lightweight low profile tread design Sealant compatible tubeless RS3 is Kenda`s fastest rubber compound and used exclusively for high end racing tires - significantly lower rolling resistance and increased wet weather traction KSCT - The optimization of existing Kenda tire construction technologies allowing for a tire to maximize the benefits of fluid based sealants while also increasing the strength of sidewalls for resistance to slices and abrasion TLR/TR - Tubeless (Light) Race is the lightest tubeless ready version of tires Kenda offers and also features an improved bead shape for better retention Tubeless 29x2.4 622 TBLS - Fold Bk/Bsk 50 120 70a/60a RS3/KSCT/TLR No