"A beautiful lock with a single flower, inspired by the Hydrangea bead.
This is a longer double lock, which means the bracelet will be looser. If this is undesirable, choose a bracelet 1 cm shorter than you would otherwise wear.
Use of this lock for leather bracelets is possible, but not recommended."
The Trollbeads Big Flower Lock is what is described in the community as a double jointed or double lock. These are considered the most user friendly and are highly suited to new collectors