SP Ableware 753761302 Tenura 100 Percent Silicone Non-Slip Roll 3-1/5' x 11-4/5" Width, Blue

I have a set like this (not this one exactly) https://www.amazon.com/dp/B0CJWSBF9P33mm flaccid shaft per the calipers just now (it varies) The inner diameter of the one i start with is 32mm.The silicon has no adhesive, here is a link to what i bought for DIY restoration projects https://www.amazon.com/dp/B008528HOQIt has a little give and i cut a 1”x5” strip. After affixing the cock ring i pull the glans away from the body and lay the strip flat just under it and wrap it around the shaft then over itself and i use that as my grip position for one hand. The other holds at the ring putting enough pressure to keep the skin im targeting taught.