These spindles have been CNC machined in the UK from EN16T. 
 
The will fit Heavyweight Webb forks as fitted to the 1920's Norton CS1 and ES2.
 
The set consists of:
2 off top spindle - 8.25" long x 1/2" diameter. 
2 off bottom spindle - 10.5" long x 5/8" diameter
 
We also sell the nut sets and knurled washers. Take a look at our other items for these.