The DHF incorporates ramped knobs for low rolling resistance and channel-cut knobs to increase gripping edges, giving straight-line control and precise cornering. Tubeless ready casing (TR) is compatible with tubes or tubeless with sealant EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions WT - Wide Track casing optimized for rims over 35mm internal width Tubeless 27.5x2.5 584 TBLS - Fold Bk/Blk 60 950 60 EXO/TR/WT NoUPC/EAN/GTIN: 4717784030869