HQMaster Carbide Square End Mill with Nano Blue Coating, 1/4“ Shank 3 Flute End Mill, HRC 60 CNC Milling Bits Set for Aluminum, Copper, Magnesium Alloys & Composite Materials, 2-Pack

Key features

• Advanced Coating & Ultra-Hard Material: This carbide end mill​ features a 3-flute​ design combines a Nano Blue coating with HV7000 hardness and an ultra-low friction coefficient (μ=0.08-0.15) for supreme wear and adhesion resistance. The core is made from HRC 60 ultrafine grain tungsten carbide, offering an optimal balance of toughness, hardness, and durability for a dramatically extended tool life.
• High-Precision Manufacturing & Verified Quality: Each carbide square end mill​ is produced on a five-axis high-precision grinding machine, ensuring exceptional stability and controllability. Every single milling bit undergoes rigorous testing on detection instruments, guaranteeing consistent accuracy and performance you can trust.
• Optimized U-Groove Design for Superior Performance: Featuring a specialized high-feed U-type groove and a sharp cutting edge geometry, this 1/4 end mill​ ensures efficient chip evacuation, reduces cutting forces, and enables higher feed rates. The result is a greatly improved surface finish and higher machining efficiency in various operations.
• Wide Material Compatibility & Reliable Results: Engineered for versatility, this end mill​ excels not only in aluminum, copper, and plastics but also handles challenging materials like magnesium alloys, high-silicon aluminum, composite materials, alloy steels, and pre-hardened steels. It delivers smooth, clean cuts and reliable performance across a broad spectrum of applications.
• Exceptional Value Pack with Assured Support: This ready 2-pack of premium 1/4 inch end mills​ offers outstanding cost savings and ensures uninterrupted workflow with a backup tool. Backed by dedicated customer care, we promise to address any product concerns promptly, providing you with peace of mind and a reliable machining partner.

Free shipping included. 30-day hassle-free returns.