These clasps have a strong magnet in them that keeps the two ends of the necklace together.

These clasps have a strong magnet in them that keeps the two ends of the necklace together. This is handy for those who find it difficult to use the other kinds of clasps.
Toggle Clasps
The toggle clasps have two pieces fingerprint jewelry. One end has a circle or some other shape, having an open center while the other has a thick bar "T" shaped bar that is passed within the circle to hold the both ends together. These clasps however, aren’t as secure as other kind of clasps.
Swivel clasps
These clasps are similar to lobster clasps in look but also have a small rotating part at the bottom of the clasp.
Key Clasps
One end of the key clasp cheap promise rings is a round or other shape which has a small lever which is pressed to insert the other end having a hole.
Box Clasps
One end of the chain has a box having an opening that is notched on the top of the box. The other end comprises of a flat metal piece that is folded over to make a spring having a knob at its end. This knob end is inserted into the opening of the other end to lock.
https://www.getnamenecklace.com/