Building or refreshing a classic small block Chevy (SBC) like a 350 or 383? This aluminum crankshaft pulley is a sweet upgrade. It's designed for use with a LONG water pump setup and has two V-belt grooves, so you can run your alternator and power steering or other accessories. Made from lightweight aluminum with a nice machined finish, it looks great and helps reduce parasitic drag a tiny bit compared to a heavy stock iron pulley. The brand is HP7, part number 485-M. It's a brand new harmonic balancer pulley. Mounting hardware isn't included, so you'll need your own bolts. This is a performance/custom part that adds a clean, polished look to your engine bay while being fully functional. Make sure your harmonic balancer and accessory brackets are set up for a long water pump and V-belts before ordering. A simple swap for a cleaner engine appearance.