These Selma Fids (Needles) come in a protective case complete with detailed illustrated instructions.

They can splice doublebraid rope from 6mm (1/4") to 32mm (1 1/4") 3-strand construction up to 36 mm (1 1/2") 12-Strand & Hollowbraid ropes from 4mm (1/8") to 20mm (3/4").