Review on 💪 Super Heavy Large Spring Clamp by Scoony Taker

When fully open, bore is 2.75" to outer edges of valve. Trim a little less than 1/4 inch for the inside edges. When closed, the internal clearance increases to just under 1.5 inches, which is nice. The clamp tension is strong enough for my needs. Rubber tips and clamp handles slip off very easily. They seem to stay in place but I wish they were more securely attached. I use some glue to help with this. If it matters to you, they are made in China.