... ;High quality OEM is ok. Carbide drill blade for deep holeTungsten tip with alloy stell shankDifferent specifications.OEM is ... ok. High quality;Passed ISO:9001Mainly used for deep hole drilling, well drilling, metal drilling, masonry drilling, ... factory, good quality, competitive price, quick delivery and best service.For more details, please contact:Trade manager account: cn220287602Website: ...