APC Thin-Electric Series props offer high efficiency and great value for your electric powered models. The center hole of the prop is designed to accept a reducing bushing to fit your propeller shaft. Included with the prop are 5 bushings to fit 3mm, 4mm, 5mm, 6mm and 8mm prop shafts.
The APC F2B-Series props are designed to meet the specific needs of Control Line flyers.
According to the widely accepted Maximum RPM formula of 145,000/D for APC E-Series props, the 13x6.5-E F2B prop should not be used over 11,154 RPM.