This set contains both SAE National Coarse and National Fine tap and dies.  
The set runs from  1/4" thru 1". Totally industrial quality tungsten steel pieces.  
Besides 20 taps and 20 dies, this set includes a large screw type tap wrench, 
‘T’ type tap wrench, large die stock with 1 1/2" adapter (for smaller dies) a
screwdriver and a heavy duty steel carrying case.  All dies are round in design 
and are adjustable.  LIFETIME REPLACEMENT WARRANTY just send 
back broken piece anytime for free replacement.
 
Sizes include one tap and die of each size:

1 1/2"  OD DIES - NC	1 1/2" OD DIES-NF        
 1/4  - 20			1/4   - 28
5/16 - 18			5/16  - 24               
  3/8 - 16			3/8  - 24  
7/16 - 14			7/16 - 20   
 1/2 - 13			1/2  - 20

2" OD DIES - NC	2" OD DIES - NF
9/16 - 12		9/16 - 18  
5/8 - 11		5/8 - 18
3/4 - 10		3/4 - 16
7/8 - 9		7/8 -14      
1 - 8		1- 14