For sale is a Lathe Backplate 19 5/8" dia, 1.85" thick, 94 lbs. Center Hole (diameter): 2.25" Big Holes near center (diameter):0.9" Distance between two Diametric Big Holes (center-center): 4.75" Small Holes near center (diameter): 0.425" Distance between two Diametric Small Holes (center-center): 4.25" All numbers are approximate.