Christmas Tree Stand Bolt End Cap

After we bought our Christmas tree we realized that many of the end caps for the bolts that held the tree in place had gone missing. This leads to the bolt ends going into the trunk, rather than pushing up against the trunk to hold it in place. I quickly whipped these up and printed them in PETG. I was in a rush, and these worked well enough, but if I could do it again I would make the internal diameter slightly smaller (so they stay on the bolt ends better) and add a couple more layers on the bottom.