Check the listing for details. Air-Lock CenterLock Strike Indicators - 1/2 inch, 3-Pack - New. Condition: New. Listed at 10.99 USD. DUAL USE DESIGN Available in 1/2", 3/4", and 1" sizes in both resealable 3-packs and bulk units.Shallow Screw Channel for adjustable fixed positionsDeep Screw Channel for free-sliding between stops or for break-away rigging.Patented O-ring insert designTapered clamping surfaces for maximum hold on even very fine leadersTextured outer surfaces for grip and easy identification of half to rotateRazor cut line retention slits prevent line from twisting while tighteningAll Parts manufactured with Eco-Friendly materialsECO FRIENDLY We believe in keeping our waterways as clean as possible. We redesigned our popular strike indicators with biodegradable foam so those indicators that end up floating away for any reason will break down over time.Not to be confused with "water soluble:" Air-Lock Eco Friendly Strike Indicators will not dissolve or be compromised in any way during normal use.Biodegrading happens when the material is left in the elements: mud, water, mulch, compost, etc. over a long period of time. Orders Processed and Filled by Gorge Fly Shop - Hood River OregonInternational Buyers – Please Note:We won't under-value merchandise or mark the item as a gift on customs forms. Doing that is against U.S. and international laws.Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the shipping company or collected when you pick the item up. These fees are not additional shipping charges.