
Great for projects you don't know what you may need until it's underway. 3d printing parts often needs some form of nut and bolt assembly and this is great for when you don't know what size you will need in the end product until a few prototypes in.Bolts, nuts washer and lock washers for each size.For the short time I've had it it has already come in so handy.

280 Piece Grade 12.9 Alloy Steel M3 Hex Socket Cover Head Bolt Screw Nut Assortment Kit with Storage Box - Includes Lengths 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, and 25mm
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79-Piece Assortment Kit Of #6 To #12 304 Stainless Steel Sheet Metal Screws With Oval And Pan Heads By T.K.Excellent
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K Kwokker 1083PCS Stainless Steel Metric Bolt Assortment Kit: M2, M3, M4 Screws, Nuts, And Washers - Hex Socket Head Cap Machine Screws, Bolts And Nuts In Silver
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π© HVAZI M2.5 Stainless Steel Phillips Flat Head Machine Screws Set for Assorted Applications
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π© M6 1.0 Stainless Steel Flanged Hexagon Flange
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π© Hard-to-Find Quick Fastener 014973253790 - 4 Piece Set
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πͺ Strong and Versatile: National Hardware N222 406 Square Bolts for Secure Fastening
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POWERTEC 4 Inch 20 2 Inch QTB1005 T Slot: A Revolutionary, High-Quality Power Tool Accessory!
8 Review