• Professional Products PowerForce Plus SFI damper
• 6-3/4" diameter & approx. 1-1/8" thick
• For internally balanced Small Block Chevys, fits 283/327/350
• Dampers are dimensionally identical to stock GM 6-3/4" damper
• 60° of easy to read timing marks & engraved marks every 90°
• Weighs approx. 9.3 lbs