Diamond Core Drill Bits 1set/9pcs Marble Ceramic Granite Hole Saw M14 Thread. 6/6/8/20/35/50/68mm Core Bits +20mm Finger Bit+50mm Chamfer. Diamond Drilling Bits Diameter 6/6/8/20/35/50/68mm, Diamond height 10mm, Total length 60mm. Diamond Milling Bit Diameter 20mm, Working length 50mm, Total Length 65mm, Grit #50/60. Diamond Chamfer Bit Diameter 50mm, Working length 46mm, Total length 55mm, Top Angle 60°, Grit #80. Item: SHDIATOOL Diamond Drilling Milling Bits Kit. Quantity: 9pcs, with Aluminum Box. Multifunction: Drilling+Milling+Chamfering Kit, meet different working needs. Vacuum brazed technology provides longer service life. With Aluminum box, easy to carry and preserve. Due to different computer monitors/calibrations, colors may vary slightly from the picture. NORTHERN IRELAND, SOUTHERN IRELAND, SCOTTISH HIGHLANDS, ISLE OF MAN, ISLE OF WIGHT, SCILLY ISLES. Scottish Highlands: FK17-22, G83, IV1-28, IV33-39, KW1-3, KW5-14, PA21-33, PA35-40, PH18-26, PH30-42. Scottish Islands: HS1-9, IV40-51, IV55-56, KA27, KA28, KW15-17, PA20, PA34, PA41-48, PA60-78, PH42-44. Aberdeen: AB all, DD7-11, IV30-32. Islands: GY – Guernsey, IM – Isle Of Man, JE – Jersey, PO30-41 – Isle Of Wight.