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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 3 - Jul 8
For Your Every Summer RSVP, with Code: SUMMER15
Description
Southwire Step Bit, DBL Straight-Flute, 1/4" to 1-3/8" SB1/4-1-3/8Southwire SB1 4 1 3 8 Step Bit, DBL Strt Flute, 1 4" to 1 3 8" FEATURES: Split point self starting tip requires no pilot hole and penetrates faster. Tri lobe shank reduced slippage and firm grim in the chuck. Laser etched sizes for easy identification. Double flute design for fast cuts and a true round hole every time. Aeronca x 1 all

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 263 reviews
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Product Reviews
★★★★★ 5
Better running mower
Seems to work fine and runs great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 4
Perfect Spark Plug
Perfect match for my lawnmower. Worked as soon as I placed it on. Great product. Thank you Amazon for the product. Fast, correct product, and affordable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
★★★★★ 5
Cost-effective alternative that works well..
I used these spark plugs on my 2018 Cub Cadet XT2 riding mower as part of the spring preparation. The spark plugs were well packed and arrive in great shape and at the appropriate gap. No issues with starting or operating the mower. These Harbot plugs turned out to be a great cost-effective option for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
★★★★★ 5
They work great.
The spark plugs are an exact replacement for my riding mower.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 5
Good spark
Plugs work well. Mower seams smoother
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
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