Materials: Silicone rubberColor: White, Pink, Blue, PurpleSize: ~6.5mm (diameter) x 2mmHole size: ~2mm(extendable 2.5mm to 4.5mm)Quantity: White:8pcs, Pink:4pcs, Blue:4pcs, Purple:4pcs Total:20pcsStopper is used to lock other beads in position, avoi...