This RedLine Tools 4-Flute Variable Index and Helix Square End Mill features precision engineering for superior performance in machining applications. Made in the USA from high-quality carbide with an AlTiSN finish, this 0.25-inch cutting diameter tool delivers exceptional durability and cutting efficiency. The variable helix design reduces chatter and improves surface finish, while the variable index pattern optimizes chip evacuation. With a Weldon shank for secure tool holding and a square end cut type, this end mill provides versatility for a wide range of milling operations. The compact design measures 3 inches in length and 1 inch in width, weighing just 10 grams for easy handling. Perfect for professional machinists and industrial applications requiring precision and reliability. Each package contains one high-performance end mill, ready for immediate use in your machining projects.