1.5" FS Billet Aluminum Weld on Bung and Anodized Fill Cap Description:1 Weld on Bung and Cap.Dimensions: Anodized Color Specifications: Black and Silver Bung Matierial: T-6061 Aluminum Cap Matierial: Aluminum Composite Bung Base Inner Diameter = A: 1-3/8" Bung Opening Inner Diameter = B: 1-1/2" Bung Base Outer Diameter = C: 2" Bung Opening Outer Diameter = D: 1-11/16" Bung Height = E: 1-1/8" Total Height With Cap: 1-1/4" Cap Outer Diameter: 2-1/4" Thread Pitch: 12NPT