Versatile Adjustability: The Adjustable Lowering Block features a range of height options, allowing you to choose from 1-1/2", 2", 2-1/2", or 3" to cater to your specific requirements. All sizes are 2-1/2" wide, making it adaptable to a variety of setups., Dynamic Functionality: This unique block facilitates modification of the lead or trail in the rear end, offering precision adjustments for optimized vehicle performance., Alignment Correction: This tool is an effective solution for correcting rear track thrust angles when performing a 4-wheel alignment, enhancing driving dynamics and handling precision., Optimal Lowering & Raising: Depending on your leaf springs configuration, the block can lower your vehicle when the springs are mounted under the axle, or raise it when the springs are m.