Masonry Drill Bits for Granite with tungsten carbide cutting tip have long working life and efficient drilling.
Milled flutes from a single piece of steel for strength.
Flutes used to carry debris away from the cutting tip and eject itfrom the drilling hole.
Periodic clear of flutes during working will reduce heat and help prevent bit bending.
Straight shank is suitable for main drills and cordless drills.
Finish:zinc plated,balck oxide,nickle plated,tin-coated,chrome plated&sand blasted
Sizes for Tungsten Carbide Tipped Masonry Drill Bits:

Dia(mm)	L2(mm)	L1(mm)
3.0	*0	*0
3.**4.0	*0	*5
4.**5.5	*0	*5
5.**7.0	*0	**0
7.***0.0	*0	**0
4.***6.5	*0	**0
6.***6.0	**0	**0
6.***6.0	**0	**0
6.***6.0	**0	**0
6.***6.0	**0	**0