Rc Boat 4mm Boat Shaft Stainle steel Drive Shaft andThree Blades Screw andCardan Jointand Stainle Steel Shaft SleeveandProp This listing is include multiple sales option, please option what you needing. All size are stock, we are shipping at same day. Pack Included: X1 Piece Shft Kit with Blades and Universal Joint- All options the shaft size is 4mm Universal joint size are for option- Blades: Default Ship Three blades 36mm CW. Please leave meage if needing other size blades. Specification: : SKYAREAProduct: 4mm Stainle Steel Marine Boat Prop Shafts andShaft Sleeve Tuber Set AembalyMaterial: Stainle StellDiameter of Shaft: 4mm (Sleeve diameter: 10mm)Shaft Length(L): 10 or 15 or 20 or 25 or 30 or 35 cm etc.Shaft Sleeve length(H): 5cm short than shaft lengthBearing: Mounted TWO HIGH QUANTITY HIGHSPEED BEARINGBlades: we default ship 3 blades 36mm CW prop(if order 2 pcs together we will ship each one CW and CCW Prop)Waterproof siliva ring added. Features: -This product is store own workshop design and produce. Welcome for bulk order.-New design, applied stainle stell, and high precision manufacture.-The Shaft and sleeve tube with high concentricity.-The shaft kit added waterproof treatmentm on both side of sleeve tube.-Much improve the shaft and sleeve tube concentricity, high precision produce. Sales option explaintion: For example: L25-H20-motor 3.17L25= Shaft length is 25cmH20= Shaft Sleeve is 20cmCompatible motor Shaft is 3.17mm Pictures: