M6 Binding Screws Connecting Bolts Cap Nuts Assortment Kit: Features of connecting bolt nut: Tighten the two ends of the insert hole through the nut screw to achieve the functions of combination, connection and fixing. used as a fastener to connected, Fit for all kinds of DIY art, leather crafts, and clothing making. Such as Baby Bed Furniture, thin photo albums, decorative bags, belts, leather bags, sandals, boots, etc. Very important size You need to know before you buy: applicable hole size 0.315"(8 mm); thickness applicable to objects to be locked: minimum 18 mm, maximum 28 mm. Specification: Material: high hardness and high quality carbon steel Main Color: Silver Size: Screws: M6 x 15mm Fit Hole Diameter:0.315”(8mm) Fit Range of thickness:18mm-28mm. Drive tool: M4 Quantity: 40 x Bolts 40 x Barrel nuts 2 x Drive tooltotal: 82 Pcs Note: Small objects and sharp drill bits, please keep away from children