#7 DE Stainless Steel Cement Spatula with Broad Blade. The HSB Cement Spatula, Double #7, is an essential instrument for dental professionals and laboratory technicians alike. Crafted with a durable AISI 410 handle, this spatula features tips and shanks made from resilient AISI 440 stainless steel, ensuring both strength and longevity.With a 6mm diameter, the double-ended design allows for versatile use in mixing materials and performing various laboratory tasks.