[Main Function] This harmonic balancer installer is used for installation for harmonic balancer. It is easy to use. It includes a threaded rod, a nut, a washer and a thrust bearing. [Premium Material] Our harmonic balancer installation tool is made of premium alloy steel material, which is sturdy and rust-proof to use. It is suitable for 5/8-16 and 7/16-16 threaded end. [Wide Compatibility] Our product is compatible with SBC BBC Engine. Please make sure the model before purchasing. [After-sales] If you have any questions, please get in touch with us, our service team will provide you with a professional and satisfactory service. [Reliable Quality] Our product is suitable for big block and small block crankshafts, which is non-slip and very stable to use. The reliable material can serve you for a long time.