Car guys, these PIT66 air cleaner spacers are exactly what you need when your aftermarket setup isn't quite clearing everything. The pack comes with four spacers ranging from 1/2 inch to 2 inches, giving you plenty of options to get that perfect fit. They work with Edelbrock and Holley setups, raising your air cleaner just enough to clear linkages and adapters that might be causing interference. The plastic material is high-quality and durable - not that cheap brittle stuff that cracks under heat and pressure. Installation is straightforward bolt-on work - no modifications needed, just stack them up between your carburetor and air cleaner until you get the clearance you need. I've used these on a couple of projects now and they've solved clearance issues every time without affecting performance. The black finish looks clean and doesn't stand out awkwardly under the hood. Whether you're dealing with a high-rise intake, aftermarket carb, or just need a little extra room for your throttle linkage, these spacers give you that adjustable height solution without breaking the bank. The four-piece set means you can mix and match or have spares for future projects. Definitely one of those simple but essential parts to keep in your toolbox for carburetor work.