Class 1 Legal 4.19” OD Hyrax All-new Ground up Design for Maximum Performance Highly Detailed Sidewall for Scale Looks Stepped Blocks & Multiple Sipes Create Unmatched Grip Tackle Tough Terrain in Scale Style Now Available in the Super Soft Predator Compound Fits Pro-Line’s wide array of 1.9” Wheels Made in the USA, since 1982 - Read about Pro-Line Racing’s History Class 1 Hyrax 1.9" Predator (Super Soft) Rock Terrain Truck Tires (2 pcs) Open Cell Foam Inserts (2 pcs) 1.9" Rock Crawling Front or Rear Wheels Height: 4.19" (106mm) Width: 1.40" (36mm)