FD Legal Antisquat adjuster allows you to cut vertically into the rear OEM horizontal subframe slot to slightly increase or mainly reduce the large amount of antisquat geometery built into the C5 and C6 Corvette rear suspension geometery. Moves the front joint in the rear lower arm 1/8" up or 1" down in 1/8" increments. 4 slotted plates and 4 cover plates in 6061AL with 2 130mm grade 10.9 hex bolts, m14 flat washers & M14p2.0 all metal top lock nuts.