Diversified Biotech SPOT-2000, Laser Tough Spots® 1/2in Diameter, White, 3,840 Spots/Unit - 89-118 | Genesee Scientific Diversified Biotech SPOT-2000, Laser Tough Spots® 1/2in Diameter, White, 3,840 Spots/Unit - 89-118 | Genesee Scientific