5PCS Dry Diamond Drill Bits Set Diamond Hole Saw 1/4``, 5/16``, 3/8``, 1/2``

• Tech information: Diameter 1/4 inch(6mm), 5/16inch (8mm), 3/8inch (10mm) & 1/2 inch (12mm); Connection: 1/4; Diamond height 10MM• The tile drill bit set is equipped with a 1/4 inch hexagonal shank and is therefore compatible with all common drills & cordless screwdrivers.• Diamond Drill Bit integrated with wax lubricant inside which melts while dry drilling and cools the cutting surface. This allows for longer drilling without much wear on larger projects.• Diamond core drill bit developed to drill in extremely hard materials such as tile, ceramic, marble, granite, ceramic, porcelain, etc.• Attention: Begin drilling approximately at a 45° ( between the hole saw and the working surface ) angle and only moderate pressure is good for the service life of the dry core bit. superb for everyday use. superior materials and excellent craftsmanship ensure long-lasting durability.