I got this to use some old bits on a previous drill I had. I switched to an SDS Max Puncher. It looks and feels premium and I've had no issues with it the few times I've used it. There doesn't appear to be any loss of ftlb-per-hit power as I used a couple of SDS Plus bits to secure the animal escape ramp in our pool and it pierced through the concrete like soft butter. I recommend this to everyone. . I am very satisfied with the performance and quality of this adapter.