... -4 Type 2)Packaging details:paper case 3)Materials:Decrative granite,marble,ceramic tile and glass ABOUT USJindu Industrial & Comercial ... bitis used for drilling hard and fragile materials,Such as decorative granite,marble,ceramioc tile and glass,etc. CF-4 TypeThis bit ... is used for drilling hard and fragile materials,such as decorative granite,marble,ceramictile and glass,etc.In 2012,after 18 years ...