Alterating vertical knobs with deep siping and 3 horizontal knobs paired with large corner knobs for improved traction in the turns 3CG - 3C Maxx Grip offers the ultimate in grip and slow rebound properties for unparalleled traction in downhill applications TR - Tubeless Ready - sealant required DD - Double Down construction features two full 120 TPI casing layers reinforced with a butyl insert WT - Wide Track casing optimized for rims over 35mm internal width Tubeless 29x2.5 622 TBLS - Fold Bk/Blk 60 120x2 3GC/TR/DD/WTUPC/EAN/GTIN: 4717784034485