JOERIC 5/16" Dry Diamond Drill Bit Set, 10 PCS Orange 8mm Ceramic Drill Bit Diamond Core Drill Bit Tile Drill Bit with Storage Case for Granite Marble Tile Ceramic Stone Glass (Not for Wood) Youngly variable speed controlled by dial

variable speed controlled by dial and constant speed control

Small size and light weight

It allows a single installer to position and hold items in place

and 1-1/2"

000 min-¹

JOERIC 5/16" Dry Diamond Drill Bit Set, 10 PCS Orange 8mm Ceramic Drill Bit Diamond Core Drill Bit Tile Drill Bit with Storage Case for Granite Marble Tile Ceramic Stone Glass (Not for Wood) Youngly variable speed controlled by dialBrand: Visit the JOERIC Store Color: Orange Features: Dry drilling design: Vacuum brazed diamond drill bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface; water can be used as additional cooling to prolong the life of the bit. Package Includes: 10 pc 5 16" (8mm) hex shank dry diamond core drill bits . Ample quantities, can meet your needs. For different kinds of materials: Diamond core bits are worked