SAFTRON White 3 Inch Pool Ladder and Handrail Surface Mounting Base - SB-3-W High impact polymer construction is super-strong and corrosion-proof Used to secure pool and spa rails, ladders, and safety railings Non-marring finish is impervious to pool chemicals, salt, and UV damage Easily mountable to any secure anchoring foundation Dimensions: 1.90 Inches Inner Diameter x 3 Inches High