4-Flute Spiral, Up-Cut Router Bits for Deeper ReachCNC foam tools let you achieve depth and precision for thick foam carving applications. Ensure your foam projects are milled with accuracy and high detail, deep cuts in thick materials in fewer passes. Titanium Nitride (TiN) coating increase strength and durability.TiN coated router bits harden and protect the cutting edges, in addition helps smooth the flutes for improved chip ejection.For thick materialUp-Cut chip removalGreat for deep profilingFor use in CNC routers and CNC router systems for machining foam.WARNING! Maximim RPM: 6,000 RPMExcellent for:Acrylonitrile-Butadiene-Styrene (ABS)Aluminum AlloysCrosslinked Polyethylene Foam (XLPE)Ethafoam**Ethylene-vinyl Acetate Foam (EVA)Expanded Polypropylene (EPP)*Expanded Polystyrene (EPS)Extruded Polystyrene Foam (XPS)Flexible Polyurethane Foam (FPF)FoamFomexA(R)Polycarbonate (Lexan(TM))PALFOAM(TM)Polyethylene (PE) Foam**Polylam**Polyurethane FoamPlasticsWood*Expanded polypropylene (EPP) is a foam form of polypropylene.**Ethafoam, Polyethylene and Polylam are durable, flexible, closed-cell foams with excellent memory.