Brand: Allstar Performance Manufacturer's Part Number: ALL96480 Part Type: Connecting Rod Bolt Protectors Product Line: Allstar Performance Connecting Rod Guide Tools Summit Racing Part Number: AAF-ALL96480 UPC: 848238043129 Boot Material: Plastic Boot Color: Black Quantity: Sold individually. Notes: Fits 3/8 in. or 7/16 in. rod bolts. Allstar Performance Connecting Rod Guide Tools Allstar Performance connecting rod guide tools are a must for engine builders. These simple devices make the installation or removal of your piston and rod assembly much less of a hassle. They cover and protect exposed piston rod bolts while safely guiding the piston rods in and out of position. The durable plastic tools include two sets of adapters that quickly snap in and out of the prong ends. Plus， if your crankshaft angle is incorrect， the tool will not allow you to continue until corrections are made! Remove and install piston rods without damage to your crankshaft or piston cylinder walls with an Allstar connecting rod guide tool.