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XINGYHENG 225Pcs 15 Kinds M2 M3 M4 304 Stainless Steel Dowel Pins Assortment Kit( Round Straight Pin Fixed Element Set with A Storage Box): Amazon.com: Industrial & Scientific
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VIGRUE 810 Pcs M4 x 4/6/8/10/12/14/16/18/20 mm Screw Assortment Kit 304 Stainless Steel Machine Screws Phillips Pan Head Screws Bolts Nuts Lock Flat Washers with Storage Box: Amazon.com: Industrial & Scientific