●【Fitment】:Especially fit for Chevy 283 305 327 350 engine, which can keep the engine work well. It is suitable for all engines using 1/4-20 thread bolts, not fitting for pontiac and fitting for Ford FE engines using 5/16-18 thread. ●【Function】:Chrome valve cover hold down spreader bars, has stable characteristics and professional performance.It will greatly help to distribute the load on the bonnet bolts, and seal the bonnet gaskets better. ●【Stable performance】: In strict accordance with product production standards, professional manufacturing, fine workmanship, reliable quality, stable performance, and worthy of your trust. ●【High-quality material】: Made of high-quality Aluminum alloy material, strong and durable, not easy to wear. It has the characteristics of high strength and high hardness, is not easy to break, rust-proof, corrosion-resistant, aging-resistant, and has a long service life. ●【Quality Assurance】: As a professional seller, we offer high quality products and thoughtful services. Each product must be strictly inspected to ensure reliable quality. Please rest assured to buy our products, I hope you have a pleasant shopping experience.