Comprehensive Harmonic Balancer Installer Tool Set: 4Pc long reach adapters ( M16x2.0, M12x1.75, M14x1.5, M12x1.5); 1Pc bearing press hex nut. User-Friendly Installation: Attach the nut/bearing assembly to the adapter, insert it into the crankshaft, and rotate until the balancer is securely in place, making your job hassle-free.