C clamp for wood working with quick release button

Drop-froged quick carpentry C clamp for wood working with quick release button
1 - Quick release button makes screw bar sliding very fast to save more time and operation during working.
2 - Drop-forged and heavy clamp body with much stronger clamping force than general casting iron C clamp.
3 - Heat-treated screw bar with high hardness will not worn and slip under high force after long-time usage.