Set comes with a total of 10 pieces in 5 different thicknesses.  You can roll your clay as thin as .5mm or stack the gauges to get a maximum thickness of 5.75mm.

This set includes the following

• 2 - .5mm / .02" / 2 cards
• 2 - .75mm / .03" / 3 cards
• 2 - 1mm / .04" / 4 cards
• 2 - 1.5mm / .06" / 6 cards
• 2 - 2mm / .08" / 8 cards

Gauges measure 6"-L x 4"-W