Lockwish Hss Step Drill Bit 5Pcs,Metal step Shanks Aluminum Case, Titanium Step Drill Bit Black

Lockwish Hss Step Drill Bit 5Pcs,Metal step Shanks Aluminum Case, Titanium Step Drill Bit Black

?Note:

Check the concentricity of the spindle and spring chuck and the clamping force of spring chuck, for the concentricity may cause the drill bit broken and make drill hole too large. Step Sizes: Bit #1: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8” Bit #2: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" Bit #3: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4" Bit #4: 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2" Bit #5: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"

Package includes: 5 x Hss step drill bit 1 x Aluminum packaging box