Specifications:- Overall Dimension(LxWxH): 7 1/16" x 7 1/16" x 15 11/16" (18 x 18 x 39.8 cm)- Tube Size(DiaxL): 2 9/16" x 15 9/16" (6.5 x 39.5 cm)- Tube Inner Diameter: 2 3/8" (6.1 cm)- Tube Thickness: 1/16" (0.2 cm)- Base Size(LxWxH): 7 1/16" x 7 1/16" x1 5/8" (18 x 18 x 4.1 cm)- Base Thickness: 3/16" (0.4 cm)- Base Height: 1 3/8" (3.5 cm)- Screw Hole Diameter: 1/2" (1.2 cm)- Center-to-Center Length of Screw Hole: 6 3/16" (15.7 cm)- Net Weight: 4.63 Lbs (2.1 kg). Package Contents:- 1x Base- 1x Tube- 4x Anchor Bolts- 1x Rubber Ring- 1x Manual. Notice: - This flag pole base is suitable for pole with diameter of 2 3/8" (6 cm), which might be unsteady for pole less than 2 3/8" (6 cm) in diameter.