Brand: ATI Performance Products Manufacturer's Part Number: ATI407058 Part Type: Automatic Transmission Drums Product Line: ATI Automatic Transmission Drums Automotive Fittings Part Number: ATI-407058 UPC: 800157080937 Remanufactured: No Transmission Drum Material: Aluminum Sprag Assembly Included: Yes Quantity: Sold individually. Notes: Features Billet steel outer support, heavy-duty center support, 6 direct clutches, 4 clutch intermediate pack, and holds up to 8 direct clutches with 0.060 steels. Description: ATI Performance automatic transmission drums eliminate the need for steel bushings and sleeves that can expand under heat and come loose, ultimately causing transmission failure. They come equipped with Torrington bearings and are designed to triple clutch life and lower ETs.