The Wilton Super Junior C-Clamp features zinc plated steel spindles to resist corrosion and extend the tool's life. The forged steel frame is heat treated to provide a strong weight to strength ratio. The clamp also features nylon caps/foot inserts to protect the work surface from marring. The oscillating head of the clamp allows firm gripping action on angular surfaces. The clamp is ideal for light-duty clamping, pattern and mold making and aircraft/aerospace industry. ADDITIONAL SPECIFICATIONS: Nominal Opening Capacity: 0 - 1"; Throat Depth: 1"; Clamp Pressure: 500 lbs.