Built specifically for scale crawlers, Nebula RC NoFoam™ replace traditional foam inserts, providing increased durability and 100% waterproofing. These inserts are an economical solution to used and deteriorated traditional foams.
Class 1 means these are intended for tires that are 4.19" (106mm) tall outer diameter.
NoFoam™ Specs:
OD: 3.75" (95mm)
Width: 1.38" (35mm)