The Miter Clamp Set by Ulmia is the original German version of an incredibly useful type of clamp system. Works great for mitered joints such as casing, crown moldings, picture frames as well as holding parts together for assembly. The clamp puts just enough pressure on your miters to create a perfect glue joint that won’t fail. Spring steel rings are available in 6 different sizes, applied with the special pliers. Set includes 1 pair pliers, 8 rings each size A to F, total of 48 rings. Comes in a nicely fitted plastic carrier to keep everything organized.