4-1/2 Inch Diamond Hole Saw Diamond Tipped Tile Ceramic-Glass Hole Saw Drill

Category

Wood Drill Bits

Store

eBay

Brand

Unbranded

C- Or you can use tap water to cool the drill bit. B-You can start drilling at a certain angle, make the edge of the drill bit into a C-shaped groove, and then make the drill bit reach a vertical position.

12.8 GBP