Complete designs with sleek style using this Beadslide clasp. This clasp features a tube on either side for adding a row of seed beads. The 18mm size will fit approximately 17-18 round 15/0 Japanese seed beads, 12 round 11/0 Japanese seed beads, 13 round 11/0 Czech glass seed beads, nine round 8/0 Japanese seed beads, eight round 8/0 Matubo seed beads, and 12 Delicas in the 11/0 size. Simply slide the clasp over the end rows of your beadwork, then close the flaps for an effortless finish. Remember that bead sizes vary dramatically from brand to brand, so you can test them by stringing beads on a needle and inserting them into the tube. The box mechanism in this clasp is a secure way to finish designs. It features a smooth style and a versatile silver shine.