General description Special design 4 flute milling machine milling cutter, usually used for mounting on milling machines. These end mills are capable of processing heat-treated molds directly and precisely, offering high toughness and abrasion resistance for fast cutting on high hardness materials. Technical specifications Material: High Speed Steel (HSS) Flutes: 4 Cutting diameters: 4mm (0.16"), 6mm (0.24"), 8mm (0.31"), 10mm (0.39"), 12mm (0.47") Usage Suitable for processing lock steel, wrought iron, carbon steel, alloy steel, chisel steel, and general iron materials. Other information Package includes: 5 x milling cutters