Description ITA 10mm Z3 1 Diamond Tipped Nesting Router Bit with Densimet body B22 Nesting and finishing operations  at 15-20m/min, 18 000 – 24 000RPM in 16mm Melamine Chipboard NEG. (Negative flute arrangement – first row spiral up, 2nd & 3rd row spiral down) Optimised flute arrangement for 2 or more passes nesting cutting.