Racing Head Service (RHS) 7944-16 Features: Made From 0.080 in. Wall Chromemoly Steel Tubing Heat Treated Black Oxide Finish Laser-Etched Part Number And Length Smoother More Efficient Valve Train Operation Designed For Hard Core Street/Race Applications Height: 12.65 Width: 3.75 Length: 1.75 Weight: 2.10 lbs