Precision-engineered in the USA, this RedLine Tools 4-Flute Variable Index and Helix Square End Mill features a 0.37-inch cutting diameter with a corner radius end cut. The variable helix design reduces chatter and improves surface finish, while the variable index spacing helps minimize vibration during operation. Crafted from durable carbide with an AlTiSN finish for enhanced wear resistance and heat dissipation, this tool delivers exceptional performance in demanding applications. The 0.38-inch Weldon shank provides secure tool holding and stability. Weighing just 10 grams, this lightweight yet robust end mill is ideal for professional machinists requiring precise cutting capabilities. Model number REP4077 ensures you're getting the exact specifications needed for your machining projects.