Fitment： 1999-2007 For GMC Sierra 1500 1988-1999 For GMC K1500 Note: The bolt sizes have been marked in the picture. Please carefully check the sizes to avoid purchasing the wrong ones. KIT CONTENTS: (R) 4" Fabricated Steel Angled Lift Blocks (R) (4) Zinc Coated U-bolts（The bolt size is 24cm, that is, 9-1/2 inches） Necessary hardware included To confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table. .
