Clamp on bird bath is made from a 2-1/4″ wide steel band that’s 14″ in diameter. Includes the green plastic (BPA free US made) dish with the perfect 1-1/4 ” depth. Heavy duty clamp features a large easy to tighten turning knob. Baked on powder coated green finish. Clamps to hand rails up to 2″ thick. Made in the USA.