The Hex Allen Key Wrench is made of metal, which is durable with great quality. It is one of the best items of the screw suppliers.
The main function of Allen Key Wrench is to tight up and loosen screw tool, customers can apply it to many common applications and situations. People sometimes may even apply it to tattoo machines. As the picture shown, the long arm of the item is especially practical for operating in confined spaces, and the size of this item is varied according to users needs.