Centers: 3", Length: 3 11/16", Width: 7/16", Base Dimensions: 11/16", Projection: 1 3/8"Centers: 3 3/4", Length: 4 15/32", Width: 7/16", Base Dimensions: 11/16", Projection: 1 3/8"Centers: 5 1/16", Length: 5 3/4", Width: 7/16", Base Dimensions: 11/16", Projection: 1 3/8"Centers: 6 5/16", Length: 6 31/32", Width: 1/2", Base Dimensions: 11/16", Projection: 1 3/8"Centers: 7 9/16", Length: 8 3/16", Width: 1/2", Base Dimensions: 11/16", Projection: 1 3/8"Centers: 6 5/16"Length: 6 31/32"Width: 1/2"Base: 11/16" x 11/16"Projection: 1.375"Screw: 2 each (M4-25, Solid 1" & M4-45, breakoff 1 3/4")