Leader Trays 1-5 for models based on 50 x 25mm pill bases, are designed for games where leaders are randomly drawn: Sharp Practise, What a Cowboy for example. 

 Made from 2 layers of 2mm MDF the trays are engraved with Leader numbers 1-5

Please see Leader Trays for models on 1p bases. "Plain" undrilled version and "drilled for magnets" are both on this website.