Cutting Diameter Description Series Page Depth .125 - .750 .50 - 1.25 Precision Center-Cutting 45C_RB 435 End Mills, 2-Flute, 30° Helix .125 - .750 .38 - 1.50 Precision Center-cutting End Mills, 47J_RC, 47D_RC 436 4 Flute, 38° Helix .125 - 1.000 .25 - 1.50 Precision Center-cutting End Mills, 46J_RC, 46D_RC 438 3 Flute, 38° Helix .125 - 1.000 .25 - 2.00 Solid Carbide End Mills forRoughing & Finishing,47C_RQ 439 Variable Pitch .250 - 1.000 .35 - 1.50 Solid Carbide End Mills for 46D_RQ 440 Aluminum, 3-Flute, Variable Helix .250 - 1.000 .50 - 1.50 Solid Carbide End Mills, 47C_RU 442 Combination Roughing/Finishing .250 - .750 .50 - 1.87 4 & 5 Flute Hi Feed Roughing 45D_RP 443 End Mill w/ Variable Pitch & Chip Splitters .062 - .500 .03 - .25 Bull Nose Solid Carbide End Mills, 45U 444 2 Flutes .250 - .500 .12 - .18 Hi Feed Solid Carbide End Mills, 45A_RA 445 4 Flutes 45B_RB, 46B_RB, .125 - .750 .19 - 1.50 Ball Nose Solid Carbide End Mills, 47B_RB 446 Multi-purpose 390