The first number is the weight , second is the FCM ( A = 7.0 , B = 6.5 , C = 6.0 , D = 5.5 ) .
I 'm not sure what the last number stands for .
The first number is the weight , second is the FCM ( A = 7.0 , B = 6.5 , C = 6.0 , D = 5.5 ) , and I 'm not sure what the last number stands for .