Having the right gear and spares when out on either a day or multi-day spear fishing hunt are critical to not being skunked. Having the right spares can make the difference when landing a trophy fish. The replacement tubing for the Bermudian Pole Spear (see SKU: MVAMA2015) is made from 3/8" x 60" (1.0cm x 152.4cm) section of 3/8" OD with 1/4" (6.35mm) hole of Prime Select pure latex rubber. Tie it yourself to get the punch and power you're looking for. The replacement tubing makes a great save-a-dive kit item.