Specification Label : It Works Great Manufacturer : It Works Great MaterialType : Carbon Steel Nickel Plated PackageDimensions_Weight : 0.8736919443060 PackageDimensions : L:6.00 X W:5.00 X H:0.50 PartNumber : at03000001 ProductGroup : BISS Basic ProductTypeName : BOLTS Publisher : It Works Great Size : 40Series M8x16mm(40Pcs) SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41XwFnLj+LL._SL75_.jpg SmallImage_Width : 75 Studio : It Works Great Title : Metric M8 x 16mm Thread T Slot,Drop-in Bolt T-Bolt,Hammer Head Bolt,T Screw Stud for 4040 Series Standard 8mm T-Slot Aluminum Extrusion Profile,Carbon Steel Nickel Plated (4040 Series,40Pcs) Weight : 0.9 WeightUnit : pounds