Higher Efficiency ASTECH Diamond Cutting Tool for CNC Router 100% Satisfaction Guaranteed + Wholesale and retail UNIQUE IN THE WORLD! Until now, ASTECH is the UNIQUE tool manufacturer who has such technology in the market: it adopts â Smelting and Fusing Diamondâ Military Technology, which creates much better performance and higher efficiency with longer service life. We had devotedly researched this Secret Recipe Technology for more than one year! 1. NO ITEM DESCRIPTION ( 1) Model No EM8-FB0810 ( 2) CED 8mm ( 3) CEL 10mm ( 4) SHK 8mm ( 5) OVL 59mm 2.Features: Strong, wears well, longer lifetime 3.Good For : ( 1) Professional CNC cutting tools for hard materials, such as stone, granite, gravestone, ceramic tiles, glass, marble, etc. ( 2) Multifunctional, like lettering, 2D carving and rough machining in Relief Sculpture, Slotting, line engraving, etc.