Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 19 - Jun 24
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Description
Simpson Strong-Tie MDMX08121Q (13/16" x 21") SDS-max Shank Quad-Head Drill Bit for Concrete DrillingSimpson Strong Tie MDMX08121Q Description The SDS max Shank Quad Head Drill Bit is designed for efficient and durable drilling in concrete and masonry. Featuring a 13 16 inch diameter and 21 inch length, it is ideal for heavy duty applications. Simpson Strong Tie MDMX08121Q Includes (1) SDS max Shank Quad Head Drill Bit Simpson Strong Tie MDMX08121Q Features Uniformly brazed carbide inserts for longer bit life Centering tip for easy spot drilling
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
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.7 ★★★★★
Based on 1257 reviews
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Product Reviews
★★★★★ 5
They work great!
My son loves his vibrating toothbrush and it needed a new head. We change the head out every time he is sick and he was just getting over Covid. The brush head is high quality, it doesn’t shed and fits perfectly. The cost per brush is excellent! We will definitely be purchasing again.
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Reviewed in the United States on August 14, 2024
★★★★★ 5
Perfect!
Works perfectly for the one we got!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 16, 2025
★★★★★ 5
Perfect fit
Perfect fit for the toothbrush. We have a different brand of toothbrush (also from Amazon) but it has been discontinued. But these replacements fit perfectly.
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Reviewed in the United States on January 3, 2026
★★★★★ 5
Good value
Way cheaper than other similar head
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Reviewed in the United States on April 16, 2026
★★★★★ 4
For kids
That's so cheap and always
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Reviewed in the United States on April 9, 2026
