| product detail: *100% brand new and high quality. * Rugged, easy to use, your good assistant for work and life. *Precise manufacturing, quality assurance *Diamond-coated drills will not undergo anti-rust treatment, and some rust may be produced on the needle, but it will not affect the use. *Suitable for drilling jade, agate, stone, crystal, jewelry, ceramics, glass and semiconductor materials, etc. Please add water when drilling *Durable, long-term use *Suitable for drilling holes in glass, marble, ceramic tiles or granite *They are core bits *Please add water as coolant and drill slowly * Very practical and useful *Buy once, use for a long time. *Complete specifications, large quantities, | |
