Brand: ATI Performance Products Manufacturer's Part Number: ATI91898060 Part Type: Harmonic Balancer Components Product Line: ATI Elastomer Ring Kits Automotive Fittings Part Number: ATI-918980-60 UPC: 800157035289 Harmonic Balancer Component Type: Damper ring Quantity: Sold as a kit. Notes: Fits 3-ring dampers with a 6 in. diameter. Description: These ATI elastomer ring kits are made of high-quality rubber. They are available in multiple diameters and ring configurations, as well as Durometers. Get your elastomer ring kits from ATI.