Blades and propellers are electropolished 316L stainless steel (SST) or PTFE. PTFE (polytetrafluoroethylene) can be used under the most adverse conditions. This high performance coating is insoluble, non-contaminating and has exceptional thermal resistance. It's easy to clean, does not scratch other surfaces and is unbreakable.
SST Pitched Blade Propeller 1" (small bore) : 1" (25mm) propeller, 5/16" (8mm) bore with set screws - Low shear, high top to bottom (axial) pumping capacity with high gas injection
100% Satisfaction Guarantee: At Mansion Schools, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Schools in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.