Use this Scarifier to easily scratch plaster undercoats so finish coat bonds and doesn't separate. The 3" long steel tines are 1/8" wide placed aproximately 1/2" apart for even coverage on the surface. The 23 tines have a light flexibility to them allowing them the give to produce the proper effect. The entire 12" tool is welded together for strength. The handle extends up 5" to allow a firm grip of the tool when dragging along walls. The handle is painted red to extend the life of the tool. The red is easy to spot on a jobsite. The handle forms a loop that can act as a hanging hole for easy storage. Proudly made in the USA.