Rc Boat 4mm Boat Shaft Stainle steel Drive Shaft +Three Blades Screw +Cardan Joint+ Stainle Steel Shaft Sleeve+Prop 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 +Shaft Sleeve Tuber Set AembalyMaterial: Stainle StellDiameter of Shaft: 4mm (Sleeve diameter: 10mm)Shaft Length(L): 10/15/20/25/30/35 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: