factory price diamond dremel drill bit tool diamond coated drill bit

Our Diamond Core Drill Bits are welded by the professional diamond electroplated. Drilling glass, ceramic, marble, granite, porcelain tile, limestone, quartz, bricks, masonry, cement, cement block, and concrete with fast speed, durability and smooth operation, various sizes and designs available upon customer requirements.

Attention: operation must add water cooling when drilling

strict of raw material, precision machining.and quality testing

packing and storage

excellent pre and after sales service

Packing Details: inner packing:plastic box/

                                   external packing: paper carton/ 

                                   as per your request

Delivery Details: 5-15 days after payment/according to the order