Scott Bonnar aluminium half with grub screws
Cnc machined from aluminium billet. Not polished but has a nice machined finish.
DOES NOT include "cork"
Available in 3/4" and 5/8".
 
Or go for the complete set including clutch half and clutch ring, cork, clutch shaft, clutch bearing, cone and spacer to suit model 45 mowers.
https://www.tridentlawnmowers.com.au/product-page/scott-bonnar-model-45-clutch-half-complete-package
 
Cork sold seperately:
https://www.tridentlawnmowers.com.au/product-page/outer-cone-lining