ATOPLEE Step Drill Bit, 3pcs HSS 6542 Spiral Fluted Step Drill

ATOPLEE Step Drill Bit, 3pcs HSS 6542 Spiral Fluted Step Drill Bit Set (Metric 4-12mm/4-20mm/4-32mm)
- {Good Quality Metarial} Made of HSS 4242,high hardness,strength and longevity.
- {Design}Shank Type:Triangle shank; Type:Spiral groove.
- {Size}Shank diameter: 10mm(0.39'') for 4-32; 8mm(0.31'') for 4-20; 6mm(1/4'') for 4-12;Hole Cutter step included: 4-12/20/32mm.
- {Usage}Used with pistol drill or bench drill, water it to cool while working to prolong its life, the proper drilling speed is 250-400 rpm.Suitable for these work-pieces that hardness is lower than 28 degree and the thickness is beyond 5mm, such as aluminum parts, insulation board, PVC plate, etc.
- {Package Included}3pcs HSS 6542 Spiral groove STEP DRILL
Features:

Suit for use in hardness under 28Â°artifacts,The plate thickness under 5 mm
You can use water to cooling it when it is work and it can be used for even longer
You can use one drill for diferent aperture
No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole
Recommend the drilling speed of 250--400 rpm

Specifications:
Material:HSS6542
Shank Type:Triangle shank
Type:Spiral groove
Size: 003:4mm to 12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm) shank diameter 6mm
002:4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm) shank diameter 8mm
001:4mm to 32mm 15Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm) shank diameter 10mm
Country USA
Brand ATOPLEE
Manufacturer ATOPLEE
Binding Kitchen
ItemPartNumber 4-12,4-32,4-20
Model 4-12,4-32,4-20
Size all of sizes,3pcs
UPCs 601308134079
EANs 0601308134079
ReleaseDate 0000-00-00

Country	USA
Brand	ATOPLEE
Manufacturer	ATOPLEE
Binding	Kitchen
ItemPartNumber	4-12,4-32,4-20
Model	4-12,4-32,4-20
Size	all of sizes,3pcs
UPCs	601308134079
EANs	0601308134079
ReleaseDate	0000-00-00

ATOPLEE Step Drill Bit, 3pcs HSS 6542 Spiral Fluted Step Drill Bit Set (Metric 4-12mm/4-20mm/4-32mm)

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