Step Drill Bits Instructions :
100% Quality And Brand New.
Automatically Deburrs Holes As You Drill.
Two-Flute Design Gives You Faster, Smoother Cutting.
Titanium Nitride Coating For Cooler Running.
Quick-Change 1/4" Hex Shank.
High Speed Steel 4241 For Long Life.
These Step Drill Bits Are Ideal For Variety Of Materials From Metal, Plastic, Fiberglass To Wood.
They Also Help To Enlarge Existing Holes.
The Two-Flute Design Tips Made The Penetration Faster Without Chipping.
Titanium HSS Cone Step Drill Bit Imperial 1/4" Hex Shank.
1.Only suitable for workpiece which hardness is less than 25 Degrees, such as carbon steel, plate, insulation board, wood board.
2.Thickness must be less than 5mm.
Shank: 1/4" Hex Shank
Center Punch Instructions :
The tip of this automatic center punch is made of high speed steel for high strength and durability.
No hammer needed, with this automatic center tool, you can create a dimple in a workpiece quickly and easily.
Usually used to mark the center of a point, the small dimple guide the tip of the drill and avoids slip or deviation which result in damaging.
Suitable for punching on steel plate, aluminum, copper, wood plank and other materials to positioning holes.
It is also a great tool kept in car to be used for breaking windows in case there is an emergency.
Tip Material: High speed steel
Body Material: Brass
Tip Hardness: HRC58°~65°
Handle OD: 12mm
Pay attention:We have two styles of yellow center punch.
Their material,quality and price are same.
The small difference is as picture shown.
We send yellow center punch randomly.
Please allow minor deviation due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.