This is the smart way to attach your float bowl to your Holley carburetor. These special ARP bolts are virtually inpervious to corrosion and the polished finish make them an enhancement to any Holley carb (Does not fit Dominator carbs). These bolts have a 5/16 6 point head and are rated at 170,000 psi. This kit is for a single Holley float bowl with no metering block. We have kits for Holley float bowls with metering blocks available also.