Bit Wear
2021/06/02

Bit Hardness Varies | Choose the Right One for the Mountain

Hello, everyone. This is Enta. This is a bit for a down-the-hole hammer. It’s a bit with a drilling diameter of about 110 mm, and I’ve used it to drill about 60 holes since it was brand new. And this is what it looks like now, lol. Here’s a side view. The main body is already worn down. I wonder if the cutting edges are worn out…