Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Triumph® ThunderBit® Heavy-Duty BP1HD Jobber Drill Bit, High Speed Steel, 7/16", 5-1/2" L, 4-1/16" Flute, 135° Point AngleUnique spiral flute design improves chip ejection and coolant flow to the point The heavy duty core guarantees increased strength and reduced breakage 135 self centering split point prevents walking" and provides quick penetration Friction reducting black & bronze oxide surface treatments for higher drilling speeds Specifications Material High Speed Steel Drill Size 7 16" Decimal Drill Size 0. 4375" Overall Length 5 1 2" Flute Length 4 1 16" Point
- Unique spiral flute design improves chip ejection and coolant flow to the point
- The heavy-duty core guarantees increased strength and reduced breakage
- 135° self-centering split point prevents “walking" and provides quick penetration
- Friction-reducting black & bronze oxide surface treatments for higher drilling speeds
Specifications
Material
High Speed Steel
Drill Size
7/16"
Decimal Drill Size
0.4375"
Overall Length
5-1/2"
Flute Length
4-1/16"
Point Angle
135°
Finish
Black & Bronze Oxide
Point Type
Split
Country Of Origin
United States
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 2347 reviews
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Product Reviews
★★★★★ 5
Amazing!!! Works great
Size: 9 inches
Works really well. Cit through my Saint Augustine grass like a breeze and it is super thick. Very happy with purchase. Battery has good life, charged it for a full 24hrs before use and it last a long time. They send 2 blades and the battery with charger which is a huge plus because everything else I looked at you had to purchase those separately and it was just as much as the edger. This is a great deal and worth the money. Highly recommend 👌
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Great thing to have.
Size: 9 inches
Great thing to have. For my small yard, it is perfect for me. Yes, the battery life does not last as long as I would like be, but I would buy this again. Great power and speed.
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Reviewed in the United States on March 14, 2026
★★★★★ 4
Edging made easy
Size: 9 inches
Surprised how well this works.
I was looking for no cord for long driveway. The battery takes a bit to fully charge, but lasts for the entire job. The levels for depth make edging around d flower beds or raised beds easy- not really a trench, but gives a good edge.
Lightweight and easy to manage. Definitely lighter than my corded edger.
The blade is sensitive and the guide to keep it steady along concrete is not great- just need to make sure you watch closely or it will spark when it hits the concrete.
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Reviewed in the United States on July 26, 2025
★★★★★ 5
Works well, a little under powered
Size: 9 inches
Works well, a little under powered when I used it for the first time. Once you get the groove established it works great to maintain it
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Reviewed in the United States on May 22, 2026
★★★★★ 1
It’s junk
Size: 9 inches
Deserves a zero. Like some others said on here, it runs for 3 seconds and just stops with battery fully charged. I got it for Christmas so too late to return. More China junk.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
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