Festool 493490 Domino Router bit - D 5-NL 20 HW-DF 500 5mm

Routing tools with threaded supports for the DOMINO jointer DF 500
Carbide tipped bit - withstands 5,000 to 14,000 joints, depending on material
Spiral flutes for clean cuts
Internally threaded for quick, easy bit changes
Creates perfect mortise width for Festool 5mm tenons

Specifications:
D : 5mm
NL : 20mm