If you have inches, and want to know how many millimeters: Step one: Convert any inch fractions to decimals. Example: 1/4 inch = 1 divided by 4 = 0.25 inch
2017年2月15日 — 6 mm is just a little shy of 1/4″ (actual .236″). If you are familiar with tools, these commonly found screwdriver bits have a hexagonal...
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