GM 7.5" / 7.625" 10-Bolt Chevy Ring Gear Spacer w/ Bolts - 075050 * Use when installing 3 Series Gears (3.23, 3.42, 3.73, 4.11, 4.56, etc) onto a 2-Series Carrier (3.08, 2.73, etc) 0.3125" Thick Includes (10) 7/16 - 20 Ring Gear Bolts