T12-203-04.5

2 and 4 flute Tuffy grade carbide end mills in 64th-inch sizes -- everything smaller than 3/8" rides on a 3/8" shank for strength, with stub and standard lengths up to 3/4" diameter.

• All sizes smaller than 3/8" are built on 3/8" shanks for strength; larger sizes step up through 1/2", 5/8", and 3/4" shanks
• Comes in 64th-inch sizes -- standard-length series run from 1/8" to 1/2" including half sizes, stub series from 1/8" to 3/4"
• Four sub-series: T12-201 (2 flute stub), T12-203 (2 flute standard), T12-403 (4 flute stub), T12-405 (4 flute standard), all square end with 30-degree helix
• Shanks come with flats; order any tool without flats by adding 'NF' to the end of the tool number
• Tolerances: cutting diameter +.001/-.000, shank diameter -.0001/-.0002, flute length +.030/-.000 (1/8" to 5/16") or +.060/-.000 (21/64" to 3/4"), OAL +/-.060
• Available uncoated or in TiN, TiCN, AlTiN, and DLC coatings
• 2 flute: slotting, side milling, helical interpolation, ramping, roughing through finishing; 4 flute: side milling, semi-finishing, finishing
• Materials: aluminum, copper, titanium, magnesium, cast iron, steel, stainless steel, brass, and wood; run dry, wet, cold air, or spray mist

From the RobbJack Applications Guide.