The best type of masonry drill bit to use for brick or concrete would be the tungsten carbide tip drill bit.
Drill bit drilling concrete lintel.
For concrete lintel use a decent sds drill with 5 5mm bit and red raw plugs and no.
When drilling into a concrete lintel you should start with the smallest drill bit for masonry you have in your set.
For metal lintels start with hss 2 5mm then enlarge to 3 2mm hole and use no.
And a masonry drill bit happens to be just the type of bit you want.
So you need something with more strength and roughness.
Two possible reasons for your problem the first maybe the drill your using lacks the power to go through the lintel and the second if youve managed to go so far in to the lintel you may have come up against the steel bars that give the concrete some of its strength try using a metal bit as well.
Drilling into concrete lintels.
They re hard enough to break through concrete without breaking apart.
This type of drill bit has a steel body along with a carbide tip.
Drilling into concrete or steel lintels and also fixing into concrete and steel lintels has presented problems for years to diy enthusiasts and professional alike.
When it comes to concrete the smaller the drill bit the easier it will penetrate.
A drill bit of 3mm is a good place to start and you can then work up from there to get the size of hole you need.
Second the tip has to be made of carbide so that it can burrow into the stone without shattering.
Bluegranite turbo carbide hammer drill bit for concrete stone and masonry drilling 5 pack model hcbg0605t view the bluegranite turbo carbide hammer drill bits collection.
The secret to concrete drill bits is the tip.
These drill bits are the hardest and sturdiest out of all the drill bits.