Loom clips allow the users of long looms to create more patterns by allowing them to change the knitting space on the long loom. These clips will give you more versatility with long looms.
I have a set of four long looms, and I was perennially cheesed off at their limitations. Sure, you can increase and decrease, but you lose your end peg, so that only worked for flat panels. Then I discovered these loom clips. I bought them on faith, because I own the "other brand" of long looms. The clips were on clearance, though, so I took a chance. And I'm glad I did. Great product, easy to use, and suddenly you can loom knit something besides endless hats and scarves.