Hair Accessories Swarovski Crystal Wire Extensions CW3-03 Wedding, bridal, prom accessories. Swarovski Crystal wire extensions are best described as a solid & very thin transparent nylon thread with Crystallized Swarovski crystals attatched. Pack contains 4 x 12" strands with 6 crystals on each str&. The fitting is with the patented fitting method, is reusable & non-slip. Quick easy to fit. This product normally takes 3-5 working days to be dispatched & NOT AVAILABLE FOR NEXT DAY DELIVERY.