This is a Large Modeler"s Clamp from Hayes. FEATURES: Made of molded glass reinforced nylon. Constant and adjustable tension provided by rubber bands. Swivel jaws permit offset clamping, clamping in non-parallel surfaces and clamping in recessed areas. INCLUDES: One Large Modeler"s Clamp. SPECS: Opening: 4" (102mm) sdw 10/02/01 ir/kh