Specification Label : It Works Great Manufacturer : It Works Great MaterialType : Carbon_steel MetalType : Aluminum PackageDimensions_Weight : 0.51147244784 PackageDimensions : L:4.3700787357 X W:2.9133858238 X H:0.5905511805 PartNumber : as04200001 ProductGroup : BISS Basic ProductTypeName : NUTS Publisher : It Works Great Size : 40 Series Dedicated M4(20Pcs) SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41WXFL4DkiL._SL75_.jpg SmallImage_Width : 75 Studio : It Works Great Title : M4 Roll in Spring T Nuts,4040 Series Dedicated with Spring Sheet,Carbon Steel Nickel-Plated for for 8mm Slot Aluminum Profile (4040Series Dedicated 20 Pcs) Weight : 0.5 WeightUnit : pounds