Received my 70 bit set and used it straight away for a few simple jobs. So far, so good. I really like this case, the individual bit guides flip out and lock in place for easy access and security, the bits pop out of their individual sockets easily but are not loose enough to fall out. The case feels well built and the latch feels secure, but time will tell if I wish it had a metal latch instead of a plastic latch. I use these bits with my Bosch PS41 and PS21 drivers. At first glance, these beats appear to be the same as most drum beats. But I will remodel the kitchen in the near future and will update my review with the performance after some time. For around $20 this seems like a good all round drum kit.