Length of the threads: M2 (4mm, 8mm, 12mm, 16mm), M3 (6mm, 8mm, 12mm, 16mm), M4 (8mm, 12mm, 16mm, 20mm), M5 (8mm, 12mm, 16mm, 20mm). - M2, M3, M4, M5 in Organized Storage Case. Compact design fits easily in tool bags, making it a great choice for professionals or as a thoughtful gift.
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