Trend Professional Pocket Router Cutter 3/20Lx1/4TC - Two Flute Cutter with Extra Long Shank 6.3mm diameter x 19mm cut x 1/4" shank Two flute cutter with extra long shank Key Features: Recessed shank to allow deeper cutting Deep grooving, rebating and mortising Useful for template work when thickness of template restricts depth Extra care must be taken to avoid breakage Take more passes than usual, and only cut up to half the diameter of the cutter in one pass This applies to cutters under 3/8 inch diameter Specification: D: 1/4 inch (imperial diameter) D: 6.3 mm (metric diameter) C: 19 mm (cut length) OL: 70 mm (overall length) Shank Diameter: 1/4 inch