With 3/8" or 7/16" Thru-Bolts, SCAT's Lightweight I-Beam design offers more strength than stock replacement rods. SCAT connecting rods feature the same high-quality craftsmanship that has led us to the forefront of the performance industry. SCAT rods are made from a 2-piece chromoly steel forging to ensure maximum strength and durability. Scat Crankshafts offer a complete line of Small and Big-Block Chevy, Small and Big-Block Ford, Holden and many more in both the I-Beam and H-Beam designs. Precision finished at SCAT on the newest and most modern machinery available by SCAT's master machinists.