This RedLine Tools 4-Flute Variable Index and Helix Corner Radius Square End Mill is precision-engineered for superior performance in machining applications. Made in the USA from durable carbide material with an AlTiSN finish, this professional-grade tool features a 0.25-inch cutting diameter and Weldon shank for secure mounting. The variable helix design reduces vibration and chatter while improving chip evacuation, making it ideal for demanding cutting operations. With its square end cut type and precise dimensions (2.5 inches in length, 0.75 inches in width), this end mill delivers exceptional accuracy and surface finish. The variable index flute spacing helps minimize harmonics during operation, resulting in smoother cuts and extended tool life. Perfect for professional machinists and manufacturing applications requiring precision and reliability.