diamond hole saw core drill bit

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diamond core drill bit /glass core/glass core bit

glass bit :Straight shank : 8mm,10mm,12mm Cone shank :45 Threaded shank :1/2 inch , 1/4 inch Wall Thickness :1mm

Diamond core drill bits

1 best service and best price 2 double cone crown profile 3 high abrasion resistant 4 long life 5 high penetration rate

110mm Diameter Core Drill Bits for Hard Concrete Drilling

1.Fast and smooth drilling at high speed 2.110mm core drill,high frequency 3.Never tip off and have amazing long life