45mm rotary blade for most rotary cutters - Emery, Dafa, Fiskar, Olfa, 

 Clover, SewMate, Eastman, Kai etc.

* Material of blades are high carbon super alloy tungsten steel  

  SKS7 punched and  hardness is up to RC 57 degree.       

 * Sharp blades along with durable edge.

* Each blade packed in a blister card.