All camshafts are made from high grade steel billet which are all cross drilled.
310 SP - 310/310 duration, 0.420" lift
320 SP - 320/320 duration, 0.420" lift
FIA 15 - 296/296 duration, 0.400" lift
FIA+ - 296/312 duration, 0.400" lift
They come supplied with keyway and grub screw for the end of the camshaft.