The inserts are 1/4 unc thread, 20 tpi.
Spikes are had to find, mostly 6 or 8 mm.
So i made my own from 1 1/4 in socket (aka grub screws).
I dont have lathe so put in drill press and use angle grinder to make the spike.
Spikes are had to find, mostly 6 or 8 mm.
So i made my own from 1 1/4 in socket (aka grub screws).
I dont have lathe so put in drill press and use angle grinder to make the spike.