Penrose OG (7) 10.15 CAD [2 4 0 2] | In stock. Add to basket Share Stock: 1 Article Number: ev-20 Information Reviews The Penrose is EV-7's debut putter and is incredibly straight with consistent fade.Plastic: For a baseline disc, the plastic is very durable and it comes in four different flexes (Soft, Base, Medium and Firm).