26 – 244mm Diamond Core Drill Bit Wet Dry Saw Hole Cutter Drilling Tool for drilling Ceramic granite. Here we offer high quality drill bits with the following diameters: Ø 26 mm, Ø 32 mm, Ø 44 mm, Ø 50 mm, Ø 63 mm, Ø 71 mm, Ø 82 mm, Ø 102 mm, Ø 110 mm, Ø 120 mm, Ø 132 mm, Ø 150 mm, Ø 180 mm, Ø 202 mm, Ø 220 mm oder Ø 244 mm. Our drill bit is perfect for use with electric core drills for drilling on granite, hard stone, concrete, reinforced concrete, and other hard surfaces. Its durable construction will ensure smooth operation of the drills. 7 mm Threaded connection: 1 1/4 Package : 1x Drill bit.