... South Korea. KEENTOOL produces kinds of diamond beads with cobalt bond system and top quality diamond ... trimming and stationary work, as well as special beads for concrete, reinforced concrete and steel cutting with ... high performance. Our standard size avaiable of diamond beads is with diameter of 8.5mm, 9.0mm ... 0/6.5mm. We can also produce the beads according to customers' specific requirement if the ...