3pcs HSS Step Drills 1/4 Inch Hex Shank Titanium Coated Step Drill Bit Set


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3pcs HSS Step Drills 1/4 Inch Hex Shank Titanium Coated Step Drill Bit Set

New high-quality three-piece HSS step drill
A drill bit can replace the multi-branched
Universal Little Helper

Material:  High Speed Steel 4241 ( Used for the hardness of the material which is below 25°, like iron borad, steel board, PVC board, Insulation board, etc.)
Surface: Titanium Plated
Type: Straight Flute/ Spiral Groove
Handle: Hexagon Shank 1/4 Inch
Scop: thin iron plate,aluminum,insulation panels,PVC panels 4mm thickness within the timber.

Size Drilling Range(Φ inch) Hole Height(mm)
{Straight Flute}
{Spiral Groove}
Height of Shank (MM) Shank Diameter(Φ inch)
3/16-1/2 3/16,1/4,5/16,3/8,7/16,1/2 6 88 87 24 1/4
1/8-1/2 1/8,5/32,7/32,1/4,9/32,5/16,11/32,3/8,13/32,7/16,15/32,1/2 12 75 75
1/4-3/4 1/4,5/16,3/8,7/16,1/2,9/16,5/8,11/16,3/4 9 73 72

Suitable for :
Products for automotive processing, aerospace, sheet metal processing, installation and maintenance of electrical and other industries, high-altitude operations with hand drills and other tools.

1, The unique step structure, a variety of standard size drill carve aperture, a box arrived on a ladder drill bit.
2, Without the use of center punch, easy to break, a step drill specifications apply.
3, Deburring, chamfering, expanding the oval hole
4, Small sway, without leading to use a center punch can carve out a nice aperture.

Package included:
1x  3/16-1/2 Step Drill
1x  1/8-1/2   Step Drill
1x  1/4-3/4   Step Drill

you can track your packages after an order has shipped.

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