This is the Rob Allen 9/16 Replacement Snapper Spear Gun Bands Band Sold in 4 Lengths Features: Available in 90, 100, 110, and 120 cm. Bands are made with branded Rob Allen 9/16" (14 mm) black rubber and single dyneema wishbones. If your bands are getting worn or cracked, or if you are going on a trip and want to be prepared with a backup set, then look no further. "