DESCRIPTION --Material: High-quality aluminum --Surface Finish: Polished --Design: Triple groove pulley --Outside diameter: 6 9/16" --Bolt circle: 2 3/4" --Center hole diameter: 1 1/8" --Applications: For Chevy Small Block 265, 283, 305, 327, 350, 383, and 400 1955-1986 --Package: Including all items in the pictures. Note: Professional Installation is Highly Recommended.
