Universal type with bosch type blade,stainless steel backing. Model size AD-405-12 12"/300mm AD-405-13 13"/325mm AD-405-14 14"/350mm AD-405-15 15"/375mm AD-405-16 16"/400mm AD-405-17 17"/425mm AD-405-18 18"/450mm AD-405-19 19"/475mm AD-405-20 20"/500mm AD-405-21 21"/525mm AD-405-22 22"/550mm AD-405-23 23"/575mm AD-405-24 24"/600mm