5 PCS Dia 1/4" 3/8" 1/2" 5/8" 3/4" Roughing End Mill Square 4 Flute M42

[Material]: Made of M42 8% cobalt high-speed steel to ensure durability when cutting hard materials. [Package]: includes 5 different sizes: 1/4", 3/8", 1/2", 5/8" and 3/4" Dia. [4 Flute Design]: The 4-flute design is well-suited for machining various hard materials due to its excellent chip removal capability. [Coating]: The TiAlN coating enhances tool life by providing excellent wear and heat resistance. [Application]: Ideal for precision milling. Mostly used for slot machining and step surface work. Five size: Blade diameter 1/4", handle diameter 3/8", blade length 3/4", total length 2-1/2" Blade diameter 3/8", handle diameter 3/8", blade length 3/4", total length 2-1/2" Blade diameter 1/2", handle diameter 1/2", blade length 1-1/4", total length 3-1/4" Blade diameter 5/8", handle diameter 5/8", blade length 1-5/8", total length 3-1/4" Blade diameter 3/4", handle diameter 3/4", blade length 1-5/8", total length 3-3/4"