Hardware and metal sticking Super glue,  

Package could be net   8g or 10g or 20g,     instant super glue with special formula for mess-free adhesive , it contents ethyl-cyanoacrylate,   it bonds Steel to Steel or other metal in 10 seconds in room temperature.

it's ideal for bonding a wide variety of materials around the home, including rubber,metals, ceramics,leather, wood,most plastics, and much more,  it's great for DIY and model making.

it's widely used in wood repairing in furniture industry, flex banner bonding in advertising industry.

Packing in small colorful box, plus display color inner box, with one metal pin for open nozzle, eye attracting design and easy for sale, 
this package would be your idea choice.