Efficient Chip Removal UNIQUE SPIRAL GROOVE DESIGN, SMOOTH CUTTING OF CARBON STEEL, ALLOY STEEL, PRE-HARDENED STEEL, HARDENED STEEL, CAST IRON,ETC. GREATLY IMPROVED PRODUCTION EFFICIENCY. *NOTICE: THIS 4 FLUTE END MILL IS SUITABLE FOR MILLING STEEL, AND IF YOU ARE MILLING ALUMINUM, WE RECOMMEND RE-SELECTING OUR 3 FLUTE END MILL. AlTiN Coating STABILITY AT HIGH TEMPERATURE AND SUPERIOR WEAR RESISTANCE AT HIGH CUTTING SPEEDS, OFFERING BETTER HEAT RESISTANCE THAN TIALN, TIN OR TICN COATINGS. Professional equipment passivation treatment INCREASE THE WEAR RESISTANCE OF THE EDGE AND PROLONG THE LIFE OF THE ILLING CUTTER. Carbide Square End Mill for Aluminum, Copper Alloy,DLC Coating Carbide Square End Mill for Aluminum, Copper Alloy,DLC Coating Spiral Upcut Milling Cutter Tool Set for Wood PVC MDF Hardwood Spiral Upcut Milling Cutter Tool Set for Wood PVC MDF Hardwood Carbide Chamfer End Mill, 60 Degree for Alloy Steels Carbide Chamfer End Mill, 90 Degree for Alloy Steels Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 79 4.4 out of 5 stars 79 5.0 out of 5 stars 5 5.0 out of 5 stars 5 4.8 out of 5 stars 6 4.8 out of 5 stars 6 Price $23.99$23.99 $28.99$28.99 $23.99$23.99 — no data $15.99$15.99 $35.99$35.99 Imperial 1/8“ 1/4“ extra long 1/8“ 1/4“ 1/4“ 1/2“ Flute 3 3 2 2 4 4 Excellent processing Aluminum Alloy And Copper Alloy, Magnesium Alloy, Zinc Alloy,Acrylic, etc Aluminum Alloy And Copper Alloy, Magnesium Alloy, Zinc Alloy,Acrylic, etc engraving/cutting/engraving/milling/grooving/engraving of acrylic, nylon, resin, plastic, MDF, wood, plywood, hardwood, etc. engraving/cutting/engraving/milling/grooving/engraving of acrylic, nylon, resin, plastic, MDF, wood, plywood, hardwood, etc. Carving Bits, V Groove for Alloy Steels, Hardened Steels Carving Bits, V Groove for Alloy Steels, Hardened Steels 4 Flute 55 Deg for Alloy Steels/Hardened Steels 4 Flute 55 Deg for Alloy Steels/Hardened Steels 3-Flute, HRC 55 Deg,Carbide Square End Mill for Aluminum 3-Flute, HRC 55 Deg,Carbide Square End Mill for Aluminum 3-Flute, HRC 55 Deg,Carbide Square End Mill for Aluminum 3-Flute, HRC 55 Deg,Carbide Square End Mill for Aluminum Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.0 out of 5 stars 17 4.0 out of 5 stars 17 4.4 out of 5 stars 23 4.4 out of 5 stars 23 4.4 out of 5 stars 23 4.4 out of 5 stars 23 Price $20.99$20.99 $25.99$25.99 $110.00$110.00 $21.99$21.99 $20.99$20.99 $22.99$22.99 Metric 2mm 3mm 4mm 8mm 10mm 1mm-12mm 3mm 2mm 4mm Flute 4 4 3 3 3 3 Excellent processing carbon steels / alloy steels/ pre-hardened steels/ cast iron,Etc carbon steels / alloy steels/ pre-hardened steels/ cast iron,Etc Aluminum / Copper Alloy / Magnesium Alloy /Acrylic /Wood,Etc Aluminum / Copper Alloy / Magnesium Alloy /Acrylic /Wood,Etc Aluminum / Copper Alloy / Magnesium Alloy /Acrylic /Wood,Etc Aluminum / Copper Alloy / Magnesium Alloy /Acrylic /Wood,Etc