Traxxas O-ring and seal set, carburetor/ O-rings: 2x1mm (3), 10x1mm (4), 2.5×1.15mm (2), 6.2×1.2mm (1)/ 5x.9mm O-ring installation tool/ 5.3×7.8x.6mm crush washer (2)/ carburetor dust boot (1) (TRX2.5, 2.5R) – TRA5247