This GL20Tungsten-carbide tipped scoring blade set is made by Leitz (China), a German leading specialist in the field of precision tool technology. GL20is used on250mm and 300mm sliding table sawswhich need wonderful cutting finish, including 2 x12-tooth blades and 4 chippers. It features 120mm diameter, 20mm bore, 24 teethand Max. 19000 RPM. GL20 provides silky smooth cutting and long life in working.