This important sculpture was done in 1971-72 and is part of the Screws and Bolts series Etrog undertook as an extension of the Links series whereby he had created sculptures of multiple shapes joined by links.

In 1971, Etrog picked up an eyescrew on a Toronto street.  Etrog commented:

It reminded me of the Nagas, Indian deities who take the form of a snake-headed female dancer... What attracted me about the new work was the challenge of their simplicity, the sensual directness of the shapes.

He told his New York dealer, George Staempfl that "they were fresh, funny and erotic..."

Most of the items in the Screws and Bolts opus were painted in bold colours of automobile paint.  As a result of the first exhibition of these works, a commission for a larger version of Sadko was almost immediate.