It's hard to see what the items really look like on the internet, so I only ordered one 18 piece silver tone set.  When they came in the mail, I immediately knew that I was going to be ordering more.  I am thrilled with this whole set.  The extenders and clasps are made very strong.  Usually things like these are made on the cheap side and break easy as well as having the circle hooks, but not these.  There are 6 clasps of one style and 6 clasps of a different style, both have a beautiful designs and have claw (or lobster) hooks. There are two 4" Extenders that can be used together on one necklace to make the necklace 8 inches longer or use just one extender on the necklace to make it only 4 inches longer.  The same goes with the two 3" extenders as well as the two 2" extenders.  The extenders have very well made claw (lobster) hooks as well.  I will never purchase any other kind of clasps and extensions.  Only these will be used on my jewelry from now on.  Very nice.  You won't make a mistake purchasing these.