Don’t be discouraged by the paper template
review by Bobzilla on 3/25/2020
Best to check the actual fit of the oval on actual suit. I tried cutting out a paper template and my hand didn’t fit. But when I tried out the real thing at a vendors exhibit, no problem. So unless you have extra large hands you are probably okay. I installed these rings in a trilam suit. You need to think through exactly where to cut the suit sleeve to ensure a good fit. My dry suit sleeves tapered but I was able, with the adhesive tape and cement, to make a good seal. The video is really helpful. Have a heat gun, some spring clamps and supply of patience.