Add a decorative finish to your designs with this fancy end cap hook. A pattern of X's and O's is etched into the ridges of this end cap. The hook extends along both edges of the tube giving it a sturdy, functional design. Try it with a 4mm end cap ring to create your own clasp. This 4mm size is great for jewelry with wide threading materials. For a strong hold, be sure to use this jewelry component with an adhesive and stringing material that closely matches its hole size.