4800J-20C, 20" J Series F-Clamp Copper, 86920.

Need to clamp over an I-beam? Tired of not being able to accommodate odd shapes? The Wilton Spark-Duty™ J-Series F-clamps have a uniquely shaped design that makes clamping irregular shapes easy.

• Spark-Duty copper-plated spindle extends the life of the clamp by protecting the spindle and pad from harmful welding spatter.
• J-Shaped Rail steps over i-beams and irregular shapes.
• Quick-Twist Pads are simple and fast to replace with a V-Groove pad included in every box, or optional serrated pad.
• Ergonomic Wilton-Grip® has anti-fatigue properties and provides comfort during repetitive clamping.
• Drop forged arm provides minimal flex under heavy work loads.