Stainless Steel Propeller Paddle With Four Arm Blade For Benchmark 20L and 40L Overhead Stirrers, 1/EA. This Benchmark Scientific propeller features a stainless steel 4-arm design, ensuring durability and efficiency in various laboratory applications. With the included propeller, this product is ideal for mixing and stirring tasks that require a reliable and robust tool. The stainless steel construction enhances its resistance to corrosion and damage, making it suitable for frequent use in a laboratory environment. Trust in Benchmark Scientific's quality to deliver consistent results, and benefit from the convenience of a propeller that is easy to use and maintain.Upgrade your laboratory equipment with this propeller to streamline your mixing processes and achieve precise results with ease.