After trying this industrial and scientific drill bit extension, I was incredibly disappointed with its performance. While it did provide a bit of added length, it was ultimately ineffective in drilling through harder surfaces. The only pro was that it's made of durable materials. Unfortunately, the cons outweighed any pros. I would not recommend this product to anyone in need of a reliable and effective cutting tool.
Pros
Provides extended reach for ice fishing
Cons
May cause added weight and difficulty in handling the auger
I bought this item to use with an earth auger although it is designed for an ice auger. I had to modify it to fit by cutting off the area underneath where it attaches to the auger (although this may not be necessary for the ice-versus-earth augers). The steel isn't very thick and is quite soft to the touch, but it worked well for drilling. five 8 inch holes through sandy bottom with some rocks and roots. It showed no significant wear. I'm sure it will work well and last as long as I need it.