Information: High quality chassis parts series products. Made of high-strength steel tubes for superior strength and durability. Stable performance, reliable quality and long service life Uniform thickness, no gas bubbles, slag, cracks, breaks or incomplete fusion. Measured by specialized inspection tools after welding to ensure that the assembly holes, bushing inserts and installation dimensions meet the requirements. Professional installer is highly recommended (instructions not included) Alignment after installation is highly recommended 100% brand new, never used or installed 1 year warranty, long service life! Direct installation, no modification required, easy installation! Compatibility Chart: For Chevrolet Silverado 1500 1999-2006 For GMC Sierra 1500 1999-2007 For 1999-2007 Chevy Silverado and GMC Sierra 6-Ton Trucks Classic 1/2 Ton Package Contents: 1*6″ Rear Axle Lowering Kit with C Notch and Drop-Off Mechanism Discount is waiting for you in the cart