Water drill bit with silver welded 27*450*8mm M22 connector diamond Drill bits core bit for drilling marble/granite/cocrete/wall

Water drill bit with silver welded 27*450*8mm M22 connector diamond Drill bits core bit for drilling marble/granite/cocrete/wall
  • Продавецprada-handbags-sale.us
  • Список ценUS $23.91piece
  • Продажная ценаUS $23.91piece
  • ДоставкаБесплатная доставка
  • Рейтинги3,9 (158)

Oписание продукта

Product Specifications:

Product Name: diamond drill bits
Size: 27*450*8mm
Mounting connector:M22
Material Metal, Diamond Particles
Military quality,
seamless steel pipes,
hot press segments,
laser welded
Widely used in reinforced concrete and other hard materials core drilling, such as air conditioner installation, pipeline,high way, road signs,bridges, airports for high speed drilling
Product show
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Teeth profile: great wall type as following: 4.5m*10m*24.5mm
Be attentioned, please. Drill bit with less than 51mm outer diameter, without turbo teeth. we use the big flat teeth, with the same quality. Please see the right top picture.
Unnamed QQ Screenshot20141031092830.jpgUnnamed QQ Screenshot20141031092842.jpg
Laser copper welding technology as following

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Connector as followign:

Mounting connector: M22 as following:

Unnamed QQ Screenshot20141031123809.jpg


Be widely used for following:

drilling hole on concrete with steel inside.

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1pc into one special designed for export strengthened carton box package


When you place an order, please choose a shipping method and pay for the order including the shipping fee. We will send the items within 7 days once your payment is completed.

We do not uarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected. Please note that buyers are responsible for all additional customs fees, brokerage, fees, duties, and taxes for importation into your country. These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments.

The shipping cost does not include any import taxes, and buyers are responsible for customs duties.



We do our best to serve our customers the best that we can.

We will refund you if you return the items within 15 days of your receipt of the items for any reason. However, the buyer should make sure that the items returned are in their original conditions.  If the items are damaged or lost when they are returned, the buyer will be responsible for such damage or loss, and we will not give the buyer a full refund.  The buyer should try to file a claim with the logistic company to recover the cost of damage or loss.

The buyer will be responsible for the shipping fees to return the items. 

Warranty & Maintenance:

We offer the 1-month free replacement.  Buyers may request for a replacement within 15 days from your receipt of the product. The buyer should return the product in the original conditions to us and should bear the shipping costs for return. 

We also provide 12-month free maintenance.  The buyer should return the product in the original conditions to us and should bear the shipping costs for return.  If any part is required to be replaced, the buyer should also pay for the costs of the parts to be replaced.

Before returning the items, please confirm the return address and the logistics method with us. After you give the items to the logistic company, please send us the tracking number.  As soon as we receive the items, we will repair or exchange them ASAP.



Your satisfaction and positive feedback is very important to us.  Please leave positive feedback and 5 stars if you are satisfied with our items and services.

If you have any problems with our items or services, please feel free to contact us first before you leave negative feedback.  We will do our best to solve any problems and provide you with the best customer services.


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