Simplicity Heavy-Duty Silicone Dosing Pump Tubing offers exceptional durability and flexibility, designed to withstand the rigors of dosing pump applications. With a 4mm inner diameter and 6mm outer diameter, this tubing ensures optimal flow rates while resisting cracking and maintaining flexibility over time. Available in three vibrant colors—green, yellow, and red—users have the option to choose tubing that complements their setup or simply adds a pop of color. Sold by the foot, this high-quality tubing provides reliable performance for dosing solutions in aquariums and other precision dosing applications.