These are the same needles included with your Swift Darning Loom, available separately for those of us who appreciate having a few spares.
Choice 1: 2 long needles, large eye. These are 3.5" long to reach all 14 hooks and can easily thread embroidery floss or tapestry yarn as shown in the photo (thread/yarn not included)
Choice 2: 2 short needles, large eye. These are around 2" long and are helpful for weaving in ends or for smaller darning.
Either size can be purchased in multiples of two. Each pair is packaged as pictured: held in fabric (fabric scraps will vary).