Best High speed Steel Multiple Pilot Counterbore

Bosch PCM12 7/16 In. Hole Saw Quick Change Mandrel

Set of 21 jobber length drill bits includes inch sizes 1/16" through 3/8" in 1/64" increments.
High-speed steel (HSS) provides hardness for wear resistance.
Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material.
Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging.
Extra thick web for increased strength and rigidity compared to standard drill bits.

2" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

1" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

7/8" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

3/4" Diameter x 1" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

5/8" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

1-3/8" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..

1-3/4" Diameter x 2" Depth of Cut include free Pilot Pin.
Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability..
Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting..
3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders..
Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form..