Blue and grey are B level tack whereas white is A level, high level of tack.
| Justrite White, 080S1836WH Numbered tabs ensure one sheet at a time removal and indicate number of remaining layers.Clean-Step™ tacky mats traps and keeps out impurities, dust and particles.. Justrite White, 080S1836WH The sticky mat is not damaged by footwear or wheels, does not slip, is noncontaminating.