This is a Traxxas 7x10x1.0mm/7x10x.5mm Black Steel Washer Set with a 5x8x2.8mm Brass Washer for the TRX 2.5R and 3.3 Engines. For Revo Big Block kit.
2x 7x10x1.0mm Washers (shims for flywheel spacing)
1x 7x10x.5mm Washer (shim for flywheel spacing)
1x 5x8x2.8mm Brass Washer (shim for clutch bell spacing)