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 of Shank (MM)||Shank Diameter(Φ inch)|
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.
1x 3/16-1/2 Step Drill
1x 1/8-1/2 Step Drill
1x 1/4-3/4 Step Drill
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