Centers: 3 3/4", Length: 4 5/8", Width: 13/32", Base Diameter: 7/8", Projection: 1 1/4"Centers: 5 1/16", Length: 5 7/8", Width: 13/32", Base Diameter: 7/8", Projection: 1 1/4"Centers: 6 5/16", Length: 7 1/8", Width: 13/32", Base Diameter: 7/8", Projection: 1 1/4"Centers: 7 9/16", Length: 8 3/8", Width: 13/32", Base Diameter: 7/8", Projection: 1 1/4"Centers: 12", Length: 12 13/16", Width: 13/32", Base Diameter: 7/8", Projection: 1 1/4"Mounting Hardware included: 2 each (M4-25, Solid 1" & M4-45, breakoff 1 3/4")