This is a pair of AKA 1/10 "V2" 4WD 2.2" Front Buggy Closed Cell Tire Inserts. AKA, the pioneer of the closed cell insert, has shrunk down the technology, and developed an insert specifically for use with 1/10 scale buggies. The 1/10 inserts are slightly softer than the standard inserts, so they work better with the light weight 1/10 buggies, while at the same time maintaining the durability that AKA inserts are known for.