Image 1 of 1 3MMC - 3mm Thick Card £9.00 Used for the heavy card in O gauge Smart models kits. Pack contains 5 A4 sheets. Add To Cart Added! Used for the heavy card in O gauge Smart models kits. Pack contains 5 A4 sheets. You Might Also Like MCIC - 300gsm Matt Coated Inkjet Card £3.50 1MMC - 1mm Thick Card £6.00 MCIP - Matt Coated Inkjet Paper £2.70 CLRFILM - 150 Micron Clear Film £3.00 500MC - 500 Micron Card £3.00