American Snap Swivels,
Barrel swivels with snap clip for pike, carp, sea fishing. Snap Link Interlock Swivels, Terminal Tackle Rigs.
24mm interlocks can vary between 24mm-27mm. Other sizes can vary slightly.
Can also be used for attaching tags, lanyards etc
Warning small parts. Not for children under 3 years. Recommended for ages 14+