They Measure

5.270" Length (Steel Tips can be shortened if needed)

.225 od Diameter (Bigger / Stronger than OEM Steel Push Rods as well as Chrome Moly Push Rods)

Lite Weight helps on Valve Float Numbers thus a little more RPM's can be expected.

Don't get lost in some major gains of RPM claims floating around.. BUT fore sure they help.

They can with stand cam lifts upwards to .375 Lift, upwards to 60 lb springs