The Sample Cutters are made to meet the PSTC specifications as called out in PSTC Appendix B 2.4 Cutter, specimen. We supply both the English and Metric versions. We can also make custom sizes with a minimum width of ¼”(5mm) and a maximum width of 2”(50mm) if you require sizes outside that range please contact us. The Sample Cutters are made of aluminum stock which is then Teflon hard coated. The blades are held in place with 2 x 3-48 Stainless Steel Button Head Screws. We also supply the replacement blades as part R-SC BLADES in packages of 10.