Replacement flame-resistant filter for the No Toil Super-Flo Kit. Top quality, two-stage flame-resistant foam air filter; the foam is specially treated to resist flames and sparks. The Super-Flo Flame Resistant Filter comes pre-treated with No-Toil Biodegradable Filter Oil, so you're getting all the benefits of the greatest air filter maintenance system in the world; stops the dirt, increases horsepower, and cleans up super easy. To provide even more protection against fire, the No-Toil filter oil is plant-based and has a much higher flash point than petroleum-based filter oils - So you're double protected. Note: Only compatible with the No Toil Super-Flo Kit; no filter cage included.