Centers: 3" (76.2mm), Diameter: 0.5" (12.7mm), Length: 3.75" (95.25mm), Width: 0.375" (9.525mm), Projection: 1.25" (31.75mm)Centers: 3.5" (88.9mm), Diameter: 0.5" (12.7mm), Length: 4.25" (107.95mm), Width: 0.375" (9.525mm), Projection: 1.25" (31.75mm)Centers: 4" (101.6mm), Diameter: 0.5" (12.7mm), Length: 4.75" (120.65mm), Width: 0.375" (9.525mm), Projection: 1.25" (31.75mm)Centers: 6" (152.4mm), Diameter: 0.5" (12.7mm), Length: 6.75" (171.45mm), Width: 0.375" (9.525mm), Projection: 1.25" (31.75mm)Centers: 8" (203.2mm), Diameter: 0.5" (12.7mm), Length: 8.75" (222.25mm), Width: 0.375" (9.525mm), Projection: 1.25" (31.75mm)