Ballnose Foam Cutter Bits Long Foam Router Bits This long router bits is a home made or custom made cutters for big fast foam block machining. Widely used used with form mould making cnc router for cutting polystyrene foam, EPS, Styrofoam, etc. Long Foam Cutting Router Bits Features: 1, High Speed Steel (HSS) hardness: HRC 61-64.5° 2, Sharp spiral blade for clear smooth finishing 3, Extended Reach for deep carving and milling 4, Foam cutter size could be customized Diameter: 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 32mm, 40mm, etc. foam router bits, foam cutting router bits, ball nose bits for form, ball end bits for foam, foam cutting bits, long foam cutter, big router bit for foam, router bits foam, EPS foam bits, foam cutting up-cut router bits, EVA foam cutter, EPS router bit