The set consists of:
3 off 7/16" BSCy narrow nuts
4 off 3/8" BSCy large hex narrow nuts  
 
They will fit Lightweight Triumph forks from the 1930's.
The list of models these fit include: 
2H
3H
3S
3SE
T70
T80
3HW
 
We also sell the spindles and knurled washers. Take a look at our other items for these.