1 1/4 inch diamond core drill bit core drill DM 26-300 mm 400 mm long (DM = 220 mm L = 400 mm)

"Optimized diamond segment construction, high drilling speeds, and long service life (industrial quality see photo) for diamond wet drilling machines with UNC 1¼ inch socket, laser-welded segments prevent segment breaks when drilling for wet drilling clean holes in concrete, reinforced concrete, masonry, and stone"