820-Piece M2 M3 M4 Screw Set. Sizes: M2, M3, M4 & Screws, Nuts, Flat Washers, Spring Washers. Screws: Varied lengths for M2, M3, and M4 with a total of 15-70 pieces each. Nuts and Washers: Includes M2, M3, M4 nuts, flat washers, and spring washers.
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