Tungsten steel blade: tungsten steel blade dedicated to the luminous word slot machine, specifically to open the fine word and other high-grade stainless steel word edge, slotted must be 1000 r / min about the speed, or knife edge is easy to collapse, collapse It is not easy to repair, it is best equipped with a depth adjustable slot machine, both to protect the blade, but also to protect equipment and materials! Tungsten steel blade diameter 9.8cm, diameter 2cm, ordinary angle grinder can be used!