Glossy quality crochet cotton or fil d’Ecosse size 20. Steel crochet hook US size 8 (1.25 mm) or size for gauge.

Intermediate. Special stitches: triple triple (trtr), 2-dc cluster

Pattern 20, page 43 of Decorative Crochet.
Pattern 3, Molino de viento, in Puntorama Ganchillo.