Brand: ATI Performance Products Manufacturer's Part Number: ATI951392 Part Type: Puller Shaft Threaded Adapters Product Line: ATI Damper Tool Installation Studs Automotive Fittings Part Number: ATI-951392 UPC: 800157072192 Adapter Attachment 1: Male threads Adapter Size 1: M18 x 1.5 Adapter Attachment 2: Male threads Adapter Size 2: 1/2-20 in. Wrench Flats: Yes Quantity: Sold individually. Notes: Adapter stud only. Description: ATI damper tool installation studs make your ATI damper puller/installer tool work for your engine. Removing and installing harmonic balancers is easier with the proper tools. ATI offers convenience with a variety of installer studs and puller bolts designed specifically for your balancer. They allow you to remove or install a harmonic balancer the easy way. Order the adapter size needed for your application.