Powerhouse Best Value available, Harmonic Balancer Installer. We eliminated the through bolt and the subsequent hole in the back of each adapter, thus adding even more strength and reliability. Supplied with eight interchangeable adapters, the universal kit fits just about all crankshafts. It uses a thrust bearing to gently squeeze the harmonic balancer onto the crank snout on even the tightest of press fit applications. If you do break one of the included adapters, replacement parts are readily available.