Piosi Metal Trolley coin keyrings Coin, when time is of the essence, our Express service is ideal for meeting tight deadlines. Made from Nickel Plated Iron with metal trigger clip & split ring, these are the perfect giveaway item. 23 mm coin with full colour print to 1 side as standard, please refer to artwork guidlines. Please note the print area is very small, so font size should be no smaller than size 8. Also available in our Rainbow & Keyrings categories. *All express orders are placed subject to our terms & conditions which can be found on the following link Express Product Terms.