6x5 to 6x5.5 Wheel Adapters AKA 6x127 to 6x139.7 These adapters will let the following vehicles wheels below fit on 6x5.5 Chevy GMC   Chevrolet Trail Blazer 2001-2009 Chevrolet SSR 2003-2006 GMC Envoy 2002-2009 To Fit Chevrolet Silverado 6 Lug Wheels 6x5.5 (also known as 6x139.7)  With a 78.1mm OUR ADAPTERS REIGN SUPREME! 25+ YEARS OF KNOWLEDGE EQUALS GREAT ENGINEERING & PRODUCT MANUFACTURING. OUR PRICES ARE SOLID LIKE OUR SPACERS BECAUSE WE ARE THE DIRECT MANUFACTURER. WE HAVE SOLD HUNDREDS OF THOUSANDS OF ACTUAL SPACERS DURING OUR TIME IN BUSINESS, SO WE GOT THE SPACER GAME ON LOCK. IT'S TIME YOU DO TOO! These USA MADE precision CNC Machined spacers are not your average spacers. Unless a set of spacers you see say Made In THE USA, 99.9% of the time they're made in China!! We use American made 6061 T-6 Extruded Aerospace Grade Solid Billet Aluminum for an overkill in strength & still keeping weight to a minimum. Most other companies use cast aluminum spacers that are made in China! Our spacers are designed with GM OEM Wheel hub & hardware specs for a complete, safe, & vibration free OEM smooth ride! DETAILS: Complete 2, or 4 Piece Installation Kit With Studs & Lugs Made From USA Made 6061 T6 Aerospace Grade A+ Solid Billet Aluminum Heat-Treated Through hardened 10.9 Solid Steel Studs For Superior Durability Fast and Free Shipping Anywhere In The United States Fast World Wide Shipping Also Available Custom USA Made Sizes Can Be Made If Desired To Just Space Or Convert Bolt Pattern In Hub Centric & Wheel Centric Designs Private Labeling Available USA Lifetime Warranty* Wheel Spacer Specifications: Wheel Adapters Hub Bolt Pattern: 6x5 (Also Known As 6x127)  Wheel Adapters Wheel Bolt Pattern: 6x5.5 (Also Known As 6x139.7) Stud Thread Pitch On Adapters: 14x1.5 OEM GM/Chevrolet Thread Lug Nuts Included: 12x1.5 Open End Lug Nuts To Mount Adapters To Hubs. Vehicle Side Center Bore: 78.1mm OEM GM/Chevy Hub Centric Bore Adapter Side Wheel Centering Lip Bore: 78.1mm OEM GM/Chevy Hub Centric & Wheel Centric For No Vibrations & An OEM Smooth Ride! Most Other Competitors use Cast Aluminum, Our Aluminum is Extruded USA Made Solid 6061 T-6 Billet! Uses and facts about our spacers and adapters Our wheel spacers and adapters are commonly used for multiple reasons, from eliminating wheel & tire rubbing against shocks and struts, clearing brake calipers, & making room for larger tire clearance. They will increase driving stability and handling performance by widening the track of your vehicle, and improve the look of your vehicle by giving you a more aggressive stance. All of our spacers and adapters come standard with heat-treated, hardened steel studs. Lastly, we only use Aerospace grade 6061 T-6 Solid Billet Aluminum on all of our wheel spacers and adapters. We are the experts in all things wheel accessory, and we have 25+ years of knowledge to back it up! At Wheel Adapters USA, we have been in the wheel accessory game longer than some of you have been alive, so we know a thing or two about wheel accessories. Rest assured you are purchasing the best quality parts the market has to offer at the absolute most competitive prices. Our prices may not be the lowest, but that's only because our quality is the highest! Ride with peace of mind knowing you're riding safe and on the BEST!   Will Only Work With The Stock Wheels From Vehicles Below Or Any Aftermarket 6x5.5 WheelsSILVERADO 1500 | 1999 AND NEWER MODELSSUBURBAN 1500 | 2000 AND NEWER MODELSTAHOE | 2000 AND NEWER MODELSTAHOE 4WD ONLY | 1995 - 1999AVALANCHE 1500 | 2002 - 2013K-2500 PICKUP 4WD (6-LUG ONLY) | 1988 - 2000K-2500 / C-2500 | 1988 - 2000C-2500 PICKUP 2WD | 1988 - 2000C-20 PICKUP 2WD (6-LUG) (3/4 TON) | 1988 - 2000K-1500 | 1988 - 1998K-1500 / C-1500 | 1988 - 1998EXPRESS VAN 1500 | 2003 - 2014ASTRO VAN | 2002 - 2005 GMC VEHICLE FITMENTSSIERRA 1500 | 1999 AND NEWER MODELSYUKON 1500 | 2000 AND NEWER MODELSYUKON 4WD | 1992 - 1999SAFARI | 2003 - 2005SAVANA VAN 1500 | 2003 - 2014 CADILLAC VEHICLE FITMENTSESCALADE 1998 & NEWER MODELS ***Lifetime Warranty against all manufacturer defects***