Purchase Qty. Reference FOB Price
1,000-4,999 Pieces US$3.10
5,000-9,999 Pieces US$3.00
10,000+ Pieces US$2.80
Product Description
Product Description Special Material The diamond drill bits are made of carbon steel, which is solidified by special enhanced electroplating. The nickel plated surface with a diamond dust coating can provide superior performance and cutting strength and extend the service life. How to drill ...