Helical/Shelical Cutterhead 8" Delta DJ-20 Jointer, Grizzly G0490, ShopFox W1741

Description

The Delta DJ-20 is one of the most desirable vintage 8" jointers out there. This is a helical cutter head, manufactured by WGM Tool Works, to replace the stock traditional steel cutters. Each head features 4 rows of cutters for a total of ~32(already installed on the cutterhead).  Each cutter, or carbide insert, is solid carbide and will out last your steel knives by a good margin. Each insert (15mm X 15mm X 2.5mm) also has four cutting sides so just rotate the one side that gets dull and your are ready to join again.
This cutterhead also fits the following machine models:
Grizzly G0490, G0490X
Shop Fox W1741, W1741S
Steelex ST1006, ST1011
DELTA DJ-20
INVICTA DI-20
DELTA 37-350
DELTA 37-365X
DELTA 37-680
DELTA 37-680X
The advantages a helical cutterhead offers include:
Chip outs largely eliminated
Extremely noise reduction
Long lasting cutter life
No sharpening
Easy replacement of cutters and no alignment required
The last picture is an example of a jointed lumber surface through a helical cutterhead.
The package include:
a helical cutterhead with carbide cutter inserts installed
5 additional spare carbide inserts
5 additional spare Torx screws
a wrench for installing inserts