Drillpro 15pcs 6-50mm Titanium Coating Diamond Hole Saw Drill Bit Set Tile Ceramic Glass Marble Drill Bits
Specification:
Model: DB-HS1
Coating: Titanium Coating
Shank Diameter: About 5-8mm
--Titanium coating, durable, better to drilling holes than normal type.
But it can't use on granite and metal.
--It only needs water for lubrication.
More Details: