Tightens all four corner joints equally and simultaneously with just the turn of a central wing nut. Jaws leave joints visible for inspection and easily adjust to accommodate frames from 5" x 7" to 26" x 30". Made of aluminum with glue resistant plastic jaws. Extra jaws sold separately.
Self-squaring frame clamp
Accommodates frames from 5" x 7" to 26" x 30"
Tightens all four corners
Aluminum construction
Glue resistant plastic jaws