Concrete Drill Bit lengthening 1pcs 3/4″ X 12″-10″ Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Extra Long Hammer Drill Bits for Concrete
$9.99
Price: $9.99
(as of Oct 01, 2025 10:57:10 UTC – Details)
Product description
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Customer Reviews
4.6 out of 5 stars 1,739
4.6 out of 5 stars 1,739
4.6 out of 5 stars 1,237
4.6 out of 5 stars 1,237
4.6 out of 5 stars 286
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Materials
Stainless Steel 410 Iron Stainless Steel 410 Iron Stainless Steel 304 Iron
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4.6 out of 5 stars 695
4.6 out of 5 stars 695
4.6 out of 5 stars 95
4.7 out of 5 stars 245
5.0 out of 5 stars 1
4.3 out of 5 stars 44
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$13.76$13.76 $8.90$8.90 $17.99$17.99 $15.99$15.99
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$19.99$19.99
Materials
Stainless Steel 304 Yellow Zinc Plated Yellow Zinc Plated Stainless Steel 304 Zinc Plated Cobalt
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4.7 out of 5 stars 119
4.6 out of 5 stars 65
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Materials
Stainless Steel 304 Iron Stainless Steel 304 Stainless Steel 304 Stainless Steel 304 Zinc
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4.1 out of 5 stars 254
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Materials
Plastic Zinc Plastic Plastic Plastic Iron
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4.6 out of 5 stars 629
4.6 out of 5 stars 629
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Materials
stainless steel Aluminum Black Aluminum 410 Stainless Steel Zinc Iron
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4.9 out of 5 stars 50
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4.6 out of 5 stars 116
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4.3 out of 5 stars 192
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4.6 out of 5 stars 58
4.5 out of 5 stars 58
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4.7 out of 5 stars 299
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$9.99$9.99 $20.69$20.69 $29.99$29.99 $19.99$19.99
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Package Dimensions : 12.17 x 0.94 x 0.94 inches; 13.44 ounces
Date First Available : June 13, 2023
Manufacturer : Wensilon
ASIN : B0C7VBWW17
Best Sellers Rank: #2,012 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Rotary Hammer Drill Bits
Customer Reviews: 4.5 4.5 out of 5 stars 548 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
SIZE INTRODUCTION:The total length is 12 inches, the actual effective length is 10 inches.
Alloy Cutter Head: The harder cross cutter is easier and more efficient for drilling work.
Material: High-strength alloy steel is made by Wensilon, very hard.
Ripple design: double line of drill bit design, drilling and punching is faster, stone powder is easier to peel off from the wall.
Compatible with most brands of impact drills on the market
Customers say
Customers find these drill bits to be well-made and effective, cutting through 6 inches of concrete like butter and working well in hammer drills. They receive positive feedback for their value and cutting speed, with one customer noting they hold their sharp edge while drilling concrete basement walls. The durability and drill speed receive mixed reviews – while some say they last a long time and drill fast, others report they bend and snap almost instantly.
9 reviews for Concrete Drill Bit lengthening 1pcs 3/4″ X 12″-10″ Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Extra Long Hammer Drill Bits for Concrete
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$9.99
S. M. –
Nice drill bits and great value.
The drill bits are great. Used them drilling into natural stone. They cut very well.
LEW –
Sturdy
Nice quality and sturdy used to attach speed bump to asphalt Worked great and was a good value
Burke Workman –
High Quality
I had about 20 holes I had to drill in concrete. Bought these hoping that I wouldn’t need to buy more bits to get the job done. Did it with just one bit, and it was still drilling well on the final hole. One thing….these are SDS bits. I didn’t know the difference. I have 2 hammer drills but neither are SDS. These bits don’t work well in conventional drill chucks.
Spoon –
Worked great.
I almost paid $50 for one of these at Lowes. I decided to wait to get them shipped and glad I did. These bits worked great and fit perfectly in my sds drill.They cut through 6 inches of concrete like nothing. The 4 edge bit is fast. Would recommend.
Paul evans –
Concrete bits
Super tough concrete bits. Not as fast drilling as some I have but last longer.
Dana H –
High quality, low price, everybody wins!
Incredible value for the money. I needed to drill a 3/8″ hole thru 10″ cement block to run a water line. These bits are by far the best concrete bits I have ever used. They have a star shaped carbide bit that cuts quickly and accurately. These bits also have a type of shaped end that fit into the drill chuck no problem. I used a standard 1/2″ hammer drill and these bits really cut fast. It did not matter if it was thru mortar or block these bits cut thru with ease. The price is for 3, don’t be fooled into thinking they have to be junk because the price is so reasonable.
budharris –
Worthless
I bought these 5 bits, thinking it was a great deal I tried 3 drill bits none would drill into cynder blocks or concrete.This is the worst product I have ever bought at Amazon, I’m really glad I didn’t spend alot of money but then I would have returned instead of throwing away.
Mildred Yarelis –
Green quality
Very, please with this. Help me to complete the job and the material. Heâs very good quality. I recommend it.
Kurt LIM –
Awesome, drill into reinforced concrete like butter. Compare to Makita 4mm drill bit at 50mm(110mm total) in length, these 4″/100mm(150mm/6″ total) drill faster with less resistance. Also, the CONFAST 3/16″ concrete screw broke when screwing into the hole drilled by the Makita 4mm drill bit. Might be the Confast screw is lousy or the 4mm hole is too big? But 5/32″ IS â3.96875â¬, â â0.03125â¬mm smaller than 4mm, I don’t think that would made any difference. I would say these drill bit created cleaner hole for the 3/16″ screw to bite on. I was kind of disappointed with the first concrete screw I ever tried as it broke but these work wonderfully, Highly recommended!