Aluminium
Spindle Husqvarna YTH22V46,YTH24V48, YTH18K46, LGT2554, LGT2654, Z254 zero-turns
You will find the CPC2G Ceramic Pourable Compound sets firm enough to demold in an hour.
2-PACK Complete Spindle 42" & 46" For Poulan Pro: PP42, PP46, 461ZX, PPX46
You will find that the ULTRA-2 pairs well with other tools from the same lineup.
(10-Pieces) GT8 Pneumatic Turbine Vibrators for hopper Golden with Free Muffler
I picked this unbranded product because it doesn't pretend to be fancy.