Buffalo Dental 79500 spatula, no. 16R, 3-1/2 inch x-stiff blade for Alginates, stone & plaster. Buffalo Dental 79500 spatula, no. 16R, 3-1/2 inch x-stiff blade for Alginates, stone & plaster. World-renowned quality and durability, used for generations by technicians and dentists.. 3-1/2 inch x-stiff blade. Sold in each. Country of origin: United States..... 3-1/2 inch x-stiff blade. Sold in each. Country of origin: United States....