6" Spring Clamp: A must have for all Rush, Splint, and Cane Webbing Weavers. The 6" Spring Clamp allows you to keep the woven strands tight while weaving. Soft rubber tips protect the rush while still keeping your seat taunt. These Spring Clamps are very easy to use and can be used by anyone, Can be used with all types of seat weaving and basket weaving projects.