Star Drill
Classified as a chisel because of its impact cutting action when struck with a hammer, the star drill finds its main use in cutting round holes in concrete, masonry or brick work.
Brackets supporting switchboards, motors and cable tray can be secured to fixing devices that have been inserted into the concrete or masonry etc.
NOTE: Since the inception of the electric `hammer’ drill and masonry bits the star drill has been largely superseded.
đang được dịch, vui lòng đợi..