Product DescriptionMaterialMade Of High Quality Zinc Alloy,Hardness High And Resistance To Perfect Wear, Standard Internal Hexagon Socket, Burr-Free, Smooth, Non-Slip.Quantity &Amp;Amp; AccessoryScrew; Hexagon Nuts:M4*10 M5*10 --- 30 Pcs. EachM6*10 --- 20 PiecesM6*15 M6*17 --- 15 Pieces EachM6*20 M8*15 M8*20 -- 10 PiecesM8*25 --- 5 PiecesM4 Key Allen Hex-Diameter:4.0Mm Length:22*66MmM5 Key Allen Hex-Diameter:5.0Mm Length:26*76MmM6 Key Allen Hex-Diameter:6.0Mm Length:32*85MmM8 Key Allen Hex-Diameter:8.0Mm Length:40*100MmHow To UsePre-Drill,Drill A Properly Sized Hole. First With Tools, When The Material Is High Hardness, Please Enlarge The Hole.Use The Appropriate Internal Hexagon Tool; To Screw.Tip:You Can Use The Vise Or The Staple To Clamp Both Sides While Inserting The Nuts To The Screw. The Wooden Board, Which Can Effectively Reduce The Cracking.ApplicationSuitable; To Soft Woods Of Pine, Plywood, Fiberboard, Etc., Have A Good Effect In Furniture Combination.Vigrue 120 Pieces Sanding DiscVigrue 7 Pieces Drill Bit Vigrue 7 Pieces Chainsaw SharpenerVigrue 120 Pieces Universal Dowel With ScrewsKit 300Pcs M2.5 M3 M4 M5 M6 M8 Hex Headless ScrewVigrue 80 Pieces Washers