Hi im jim, and i try to help as often as i can , what the numbers and letters mean are as follows (1) the 210 is the diameter of the blade (2) the 5/8" is the diameter of the hole in the middle(3) the 2.6 is the thickness of the blade in mm (4) 12T is the amount of teeth per inch ,hope this helps
jim
January 2010
210mm is the blade DIAMETER
5/8" is the spindle size the blade needs mounting on
2.6mm is the width thickness of the blade
12T is the number of teeth on the blade
Have seen some 210 diameter blades at Aldi they keep running the same product every couple of months