Those Alfa Romeo 157mm conrods are made from forged 4340 Chrome Moly Steel, designed to H beam for the highest strength, durability and dedicated for Racing.
Center to Center Length: 157mm/6.181"
Big End Bore Diameter: 53.7mm/2.114"
Big End Width: 26.72mm/1.052"
Small End Bore Diameter: 22mm /0.866"
Small End Width: 22.86mm/0.900"
Beam Style: H-beam