لقم الثقب الماسي، مجموعة لقم الثقب الماسي، لقمة مثقاب زجاجية عالية الجودة للزجاجات والأواني والرخام وحجر الجرانيت وقطع البلاط 0.23 بوصة - 2 بوصة (6 مم - 50 مم) 15 قطعة

【15 Sizes】Diamond drill bits for ceramic, 6mm/0.23“，8mm/0.31“，10mm/0.39“，12mm/0.47”，14mm/0.55“，16mm/0.62”，18mm/0.7“，20mm/0.78” , 22mm/0.86”，25mm/0.98”， 26mm/1.02“，28mm/1.1“， 30mm/1.18“, 40mm/1.57in, 50mm/2“. Glass cutting drill bit ., 【Premium performance】Glass cutting drill bit are high quality and good performance that excellent for making clean and accurate hole., 【Wide Usage】Diamond hole saw drill bit set kit removes a complete circle from glass, marble, tiles,granite, ceramic or other., Perfect for drilling glass, porcelain tile, granite, bottles, Wood, Blocks Jars, ceramic marble and and other hard surfaces, 【Built to Last A Lifetime】Glass drill bit for bottles, are made of industrial grade carbon steel, sharp, fine workmanship and super wear-resistant, Extended service life, these drill hole saws are impact and wear resistant, durable and robust., 【Tip】Diamond drill bits for ceramic, When you using the diamond hole saw, please use lubrication (water), lubrication will extend drill bits life.