Two files are included; simple and easy to print cover that fits most Gillette Razors and a cover for Gillette King razor blades. Snug friction fit ensures that the cover will not fall off on its own yet not too tight enabling easy removal. If you are unsure whether the model fits your razor, the model only takes about 1,5g of plastic making it easy to test compatibility. I will update the list of supported razors as people try my model. I printed mine in clear PLA and I have mad no issues with longevity. Face the flat bottom on the build plate and use 5mm brim to ensure good bed adhesion.