Well spaced paddle like knobs in the center and large siped corner power through any terrain EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required DC - Dual Compound tread provides a lower rolling resistance center paired with extra grip for the corners Tubeless 27.5x2.6 584 TBLS - Fold Bk/Blk 40 770 60 EXO/TR/DC NoUPC/EAN/GTIN: 4717784032658