This Carrier Bearing Kit is customizable for each truck it is installed on. Some trucks may need more drop to their carrier bearing than others, this is why this kit contains a collection of 1/8, 1/4 and 1/16 inch shims. These shims make it simple to fine tune the drop and minimize driveline vibration.Additional Attributes:GTIN:00840103402239AAP_UDA_12:EAAAP_UDA_22:1AAP_UDA_4:55California Proposition 65:WARNING: This product contains chemicals known to the State of California to cause cancer, and birth defects or other reproductive harm.Extended Information:Emissions :Emissions Compliance ExemptLife Cycle Status:Available To OrderPackaging:Quantity of Each:1.0Package UOM:EADimension:8.0000 x 4.0000 x 3.0000 inchesWeight:8.0000 PGPDF:I33700_REVA