This pair of Insert have the following use indications: - HIGH GRIP for track with Carpet with high thickness - HIGH GRIP for track with Astroturf This pair of Insert have the following technical features: - Cutting sizes studied for the complete filling of the N30 tyres, to guarantee maximum lateral grip - H Hard compound for foam material, exclusively developped for model tyres - High precision WaterJet cutting for balancing 100% guaranteed The main sizes for this insert are: - Insert outside diameter 80mm - Insert inside diameter 50mm - Insert total width 40mm Included on this package, you have: - 1 Pair of Insert This pair of Insert as suitable for following Tyres: - For Tyres GRP GN30B e GN30C - All Rear Tyres 1:10 BUGGY 4WD, from all brand