Trend Professional Router Cutter 53/30x1/2TC - Mortise Router Cutter / Morticer 16mm diameter x 50mm cut x 1/2" shank TCT (Tungsten Carbide Tipped) cutter with staggered cutting surfaces Key Features: Deep mortising and grooving giving good chip clearance For lock mortising, two width cuts will be needed to achieve the standard 19mm mortise Take several passes to avoid cutter breakage and motor overload Specification: D: 126 mm (diameter) C: 50 mm (cut length) OL: 103.0 mm (overall length) Shank Diameter: 1/2 inch