Attributes of 3.17mm Prop Saver   Specifications: 3.17mm Prop Saver Material: Rubber (O Ring), Aluminum (Prop Saver) Can be used on any brushless motor with a 3.17mm shaft Weight=5g Description: Suitable for 3.17mm prop shafts, this aluminum prop adapter set is supplied complete with locking screws, a spacer, and 3 x rubber prop bands. 3.17…