Are these hole saws worth keeping?

[username132]

I was looking for something to drill a hole with and found these which I haven't seen in a while. I went to use one and noticed that the drill bit in the arbor is bent. It's a little special and has a flat so a screw can be tightened against it. I'm sure I could source a replacement drill bit online but I was wondering whether it's worth it. The saws themselves seem pretty flimsy. I'm not sure it's worth replacing compared to getting more solid saws.

 

[Burnerman]

They have their uses.....strictly DIY and thin stuff.
It's easy enough to grind a flat on a new drill - if you have a grinder- or even file one. It doesn't have to be much, just enough for a screw to grip.
John

 

[noseall]

Horrendous hole cutters.

 

[Nozzle]

Bin it! You can get some good holesaws from the toolstation Punk range - just buy a new size as you need it, so you don't have a huge outlay in one go.

Nozzle

 

[Roger928]

Probably the worst ever made.