8-Rib pulley for VMP Odin or Predator front-feed TVS supercharger and 6-bolt hub Lightweight 6061 T6 aluminum Black anodized Laser-etched with size use with pulley bolts M6 x 14mm VMP-SUA017 Works with Odin superchargers that are running the VMP 8-rib conversion VMP-SUP021 and VMP-SUP022 Maintains the correct belt alignment with ATI/ VMP balancers VMP-918075 and VMP-918076 hub spacer not required