The title says it's an SDS bit, it's actually a wedge bit for a larger chisel gun. I have both so I left that bit for future use but it didn't help me here.
Can't comment on how well this works on concrete but works wonders for breaking up hard lumps of clay. This bit is good quality and I'm sure it will work properly on concrete.
Sturdy and removes excess concrete very well. Don't even think about SDS+ with this kind of work. Use SDS Max. It takes better shots. I have both and this one holds up better to this type of work.