This kit comes with everything you need for your project.  Each kit comes with:

• (4) 5/8" diameter caps 
• (4) 5/8" diameter, 1/2", 3/4" or 1" tall barrels depending on your choice
• (4) Connecting studs for holding material from 1/4"-1/2" thick
• (4) Combination screws for mounting to drywall or wood 
• (4) All-purpose nylon anchors 

Kit is available in your choice of Clear, Black or Brass Anodized aluminum.