3 1/2 Hercules connecting rods. One cap has been lost. No bolts. These are part number 58090. I have no idea what size engine they are from. So, if you recognize them, great, you must need them, they are priced to sell.
Oliver Connecting Rods Oliver Rods C6800bbmx8 Billet Connecting Rod Set For
I Beam 5.700" 2.100" .927" 5140 Steel Connecting Rods For Con Rods Chevy SBC 350
I Beam 5.700" 2.100" .927" 5140 Connecting Rods For Con Rods Chevy SBC 350
I Beam 5140 Connecting Rods 5.700" 2.100" .927" Con Rods For SBC 350 1967-2003
con rods 5.7 inch chevy sbc 350 connecting rods pce274.1003 floating pin