Hex Autoparts 4pcs 2" 6x5.5 to 6x5.5 Wheel Spacers Adapters for Chevrolet Avalanche Silverado Suburban Tahoe GMC Sierra Yukon M14x1.5 (Silver) Thickness 2" / Center Bore: 108mm / Vehicle Bolt Pattern 6x139.7mm or 6x5.5 / Wheel Bolt Pattern 6x139.7mm or 6x5.5 / Threads: M14X1.5 Made of 6061-T6 Aluminum, which has excellent corrosion resistance and workability It comes with 10.9 grade bolts These wheel spacers will widen your vehicle wheel base, increasing stability and resistance to side roll-over Please verify the specification before ordering Thickness 50mm or 2 inches Vehicle Bolt Pattern 6x139.7mm or 6x5.5 Wheel Bolt Pattern 6x139.7mm or 6x5.5 Center Bore: 108mm Thread Pitch: M14X1.5 Please make sure that you have bought the compatible wheel spacers for your vehicle before installing the wheel spacers. Professional installation is recommended.