5pcs Set Quick-change Titanium Coated Step Drill Bit Sets High Speed

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3-sided shank prevents slip in drill chuck.
Double blades design enables a faster and smoother .
X-type openings design to facilitate the removal of waste when drilling.
The sharpness and titanium coating ensure easily cut through most sheet metal.Specification:Material: HSS (High Speed Steel)
Box size: 150x120x40 mm / 5.90x4.72x1.57 inch
Use tools: drill, bench drill.
Size:
#1: 1/4" to 1-3/8" 10 Steps (1/4'', 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8")
#2: 3/16" to 7/8" 12 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")
#3: 1/4" to 3/4'' 9 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4")
#4: 1/8" to 1/2" 13 Steps (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'')
#5: 3/16" to 1/2" 6 Steps (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'')
Package Includes:1 piece box
5 pieces step drillNote:When you hit the steel plate, be sure to inject water to cool it. The drill bit is easy to anneal during high temperature during use. If you insist on this operation, the drill bit will be scrapped soon.Titanium Step Drill Bit Set ;Step Drill Bit ;Step Drill Bit Set ;Step Bit ;High Speed Drill Bit Set ;High Speed Steel;Drill Bit

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