Car enthusiasts and mechanics, this JEGS proportioning valve is exactly what you need for fine-tuning your brake system! It measures 4.25 inches tall when open, 3.75 inches when closed, with a compact 1.5x1 inch footprint that fits in tight spaces. The 1/8 inch inlet and outlets work with standard brake lines, and it comes with adapter fittings for both 3/16 inch and 1/4 inch lines - super helpful for different applications. The adjustability lets you dial in the perfect brake bias between front and rear, which is crucial for performance driving, towing, or when you've modified your suspension. Installation is straightforward if you're familiar with brake work, but remember to bleed your brakes properly afterward. The build quality feels solid - much better than cheap auto parts store alternatives. I've used these in race cars, restored classics, and even daily drivers that needed better brake balance. Whether you're building a project car or just want more control over your braking performance, this valve delivers professional results. The price is reasonable for the quality, and it comes with all the fittings you need to get started. Definitely one of those upgrades that makes a noticeable difference in how your vehicle stops!