This is for a lot of 300 Screw eyes. The loop is about 1-2mm. The length is 5-6 mm. These are insanely useful for crafting and for jewelry making, in particular. Put a little bit of epoxy inside a bead and slide this in the hole....instant earring charm....just slap on a french hook. Instantly turn any small toy or figure into a charm. Soft items....simply screw it in. Hard items, drill first, apply super glue or epoxy, insert screw eye.