Each bit measures 1/8″ [3 mm] .2mm. the thickness of the shank x 2-1/2″ [6.35 cm. lon.
Drill bits are specifically designed to cut irregular cut outs in drywall and other materials (gypsum Board.
It is also possible to use it on thin plywood (less than 1/4 inch in thickness).
It is compatible with all rotary tool manufacturers.
Compatibility: This product is compatible with all rotary tool brands.
This bit fits in my drywall router, but it does not provide me with adequate cutting control.