57910 Type 178-AG HSS Magnum Super Premium 135Â degree Split Point 3-Flats on Shank 3/8" Reduced Shank Drill Bit (1/16-1/2 by 32nds) 3/4"-10 Thread 065" 125 psi 28" Hg

065" 125 psi 28" Hg 2 1/2" PU516 5/16" 15/32"

the basic design of this unit has remain unchanged for many years

For 90° shaft applications

656" -40°F-212°F 200 psi R12 1/2"

57910 Type 178-AG HSS Magnum Super Premium 135Â degree Split Point 3-Flats on Shank 3/8" Reduced Shank Drill Bit (1/16-1/2 by 32nds) 3/4"-10 Thread 065" 125 psi 28" HgSpecial Hi Molybdenum tool steel. 135 degree split point for fast penetration and accurate starting without center punch. Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance. Body and clearance are gold surface treated for maximum lubricity. Reduced shank with flats for positive chuck grip. Click Here for product catalog Proudly Manufactured in the U. S. A