Staggered center knobs in groups of 1, 2 and 3 paired with angled shoulders and large aggressive corner knobsSPDGRP - SpeedGrip - Addix SpeedGrip compound is Schwalbe`s all around performace upgrade compound well versed on all terrain and conditionsSTRL - Super Trail, 3 carcass layers under the tread with 2 on the sidewalls, bead to bead Snake Skin material and APEX sidewall chafer for increased puncture protection and stabilization.Tubeless29x2.6622TBLS - FoldBk/Bsk67SPDGRP/STRLNoUPC/EAN/GTIN: 4026495881036