With this amazing set of spacers you'll always be able to roll out your metal clays to just the right thickness. No more messing around with stacks of playing cards, just choose the right coloured set of spacers. Put the spacers on each side of your clay, and use a roller to roll out the clay at an even thickness. Price is for a complete set, with one pair of each colour. The spacer slats range from 0.75 mm to 3 mm: 
Black is 0.75 mm (3 cards thick)
White is 1 mm (4 cards thick)
Grey is 1.5 mm (6 cards thick)
Orange is 2 mm (8 cards thick) 
Silver metallic is 3 mm (12 cards thick).