"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
|7131808||Retaining wedge for concrete forms|
A retaining wedge for concrete forms has a tapered body of generally trapezoidal or triangular configuration. Oppositely diverging side edges of the body are provided with alternating peaks and valleys so as to present a number of detent-like depressions that encour...