To rout butterfly key and splines in timbers and man-made boards.
Use in conjunction with 104 deg (14 deg) dovetail cutter ref. L120 which cuts dovetail pocket.
Use in a router table.
Cut material in two passes to create a butterfly shape width of butterfly spline is determined by dovetail cutter used.

Specification:
D=28.0 mm
C=46 mm
A=104 degree (14 degree)
OL=84 mm
Shank Diameter=1/2 inch