Reading one of the old manuals, they interchange the depth of cut .030 with the actual diameter change, .060. My impression is that the smaller drums from the old days , 12" and under were good for .060. the larger drums were good for .125.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!