2022 Good Quality Core Drill Bit Extension - Extension For Diamond Core Bit – KEEN

Convenient fast assembling for diamond core drills to drill deeper in concrete or masonry. The two ends of extension are of same thread size, only one is female and the other is male. The pupular sizes are 1-1/4”UNC, 1/2”BSP and CRI28 with effective length 100-500mm. Other sizes can be provided upon request. It is suitable for the lengthening and

connection of different types of core drills on the market. Also the extension can be used by connecting several pieces of them when necessary. Customers can choose the appropriate way upon different site working conditions.
Regarding material, the extension is made of high grade steel, very strong and durable, it has much longer life than the common ones made of low grade steel. The outer appearance can be with oil or black paint or chemical black coating to avoid rust according to customer’s requirement.

Regarding package, each extension will be packed by the air-cap plastic film to avoid collision in transportation, then put into carton on pallet or a strong plywood case when the quantity is big.

Regarding order quantity, customers can order a few pieces as samples for testing purpose, once the testing result is satisfying, the Minimum Order Quantity for each size will be 50 pieces for batch orders.

For production time, it is usually 2 weeks.
High quality, fast delivery and good service is always our tenet, which makes us outstanding in the competition.

Welcome to be our business partners!