http://www.patiogardenponds.com/ It is Achla Designs Clamp w/ Ring Holder, Holds Crackle Glass Birdbaths; this is a clamp that has a ring holder. The bracket fits most 1” pole systems and holds our Achla crackle glass bird baths to give an elegant finish in your chosen location. Birds will surely flock in your garden, lawn, yard or patio with Achla Designs Clamp w/ Ring Holder, Holds Crackle Glass Birdbaths; have a nice clamp that will firmly hold your glass bird bath.