This Kaho Rain Chain has eight large square cups that are made of very heavy gauge copper. Kaho means family tradition heirloom. Each square cup has a folded lip on the rim. The cups are connected with diamond shaped "hishigata" links. The classic design of this rain chain directs the rainwater down the chain from cup to cup. Simply insert the triangular hanger that is included into your existing rain gutter drain hole or place it on a corner eave of your home or patio. It will weather to a delightful verdigris patina with time. Complete the look with copper or granite basin for a beautiful display. All our rain chains are 100% copper.