Heavy Set Weighted Air Tubing, 1/4″ – 50′ RollOur Heavy Set tubing remains on the bottom when filled with air. Installation is fast, clean and neat.Model:WD3RID: 1/4″Unit of Measure: 50′ RollFor long distances and large bodies of water use 3/4″ or 1″. Use 1/4″ or 3/8″ for smaller volumes of air, shorter distances or where line loss is not important. Compatible with 1/2″ “nominal” insert fittings and “shoreside” tubing. Requires clamps (or solvent weld the couplings).Product code: 8737Item No. AE-WD3R