Trend CraftPro Two Flute Intumescent Recessing Router Cutter Bit, 1/2 Inch Shank, 40mm Cut Diameter & 15mm Length, Tungsten Carbide Tipped, C221X1/2TC

Amazon

INTUMESCENT STRIP RECESS TOOL: Designed to accommodate intumescent strips in doors and frames, this specialised tool creates recesses. The recesses enable strip expansion during high temperatures, ensuring fire resistance and reducing flame and smoke propagation. TUNGSTEN CARBIDE TIPPED: 2.0mm micro-granular extra-hard tips for prolonged sharpness and cutter durability. Ideal for cutting softwood, hardwood, and man-made timber boards. PTFE NON-STICK COATING: Its PTFE non-stick coating reduces friction, minimises resin build-up and extends the cutter's lifespan for uninterrupted router performance. PRECISION CUTTING: The highly ground tip face is polished to 800-grit to ensure accurate cutting with a fine finish for professional routing results. SAFETY & COMPATIBILITY: Longer shanks accommodate both handheld and table routers. Features a Safety K-Mark for optimal shank positioning. EN Shank Markings for visible cutter safety data., Weight: 0.46 pounds, Manufacturer: Trend

ManoMano

For either frame or door applications, with standard Intumescent Strip. Neatly cuts grooves on doors or frames to accept Intumescent Strip which enables the formation of effective barriers to both fire and smoke. By using alternative ball bearings diameters other seal thicknesses can be introduced. Alternative bearings can be purchased to suit other thicknesses. For 4.0mm thick and 15.0mm width intumescent strip. Dimensions: D=40 mm C=15 mm B=32 mm E=4 mm Shank Diameter=1/2 inch Shank Diameter: 1/2 Grade: TCT Diameter Metric: 40 Cut Length Metric: 15 Bearing Diameter Metric: 32

Zoro Tools

Intumescent cutter 15mm x 40mm