Maxxis

High Roller UST Mountain Bike Tire - 26in

The High Roller excels in every discipline in nearly every condition. Just find the size and rubber that meets your needs, pry it on, and ride. The center tread has both rectangular bars for tractor driving and grooved, triangulated lugs for a piercing bite. The side knobs are tall and straight and hold the line where you find it.

The UST has 70a rubber and 120 TPI casing and a folding bead. 

Tubeless 101: The Why and the How Explained.

• Tire Durometers: Higher the number the harder the compound, softer durometers grip better, but wear out faster
  
• 70a: Hardest compound for maximum tire life, lowest rolling resistance
  
• 62a: Medium compound for improved traction, low rolling resistance, will wear out faster than 70a
  
• 60a: Better traction, higher rolling resistance
  
• ST or 42a: (Super Tacky) Highest levels of grip, fastest wearing – For downhill racing, freeride
  
• 3C: (Triple Compound) hard center compound for low rolling resistance and long life, progressively softer compounds on the edges for higher grip when cornering
  
• Exc: (eXCeption Series) Combination of 62a compound and a 120 TPI (threads per inch) casing, 120tpi offers lower rolling resistance, higher flexibility(better handling) and lighter weight – recommended for racing.