Feature:1. Material: The shaft and sleeve are made of stainless steel, with high hardness and high toughness, high temperature resistant.2. High Speed Bearings: There are two high speed bearings between the shaft and the sleeve to make the drive shaft work smoothly.3. Parameters: Shaft length 10cm/3.9in, shaft sleeve length 5cm/1.95in, propeller size 36mm/1.4in, suit for motor shaft diameter 4mm/0.15in.4. Application: The drive shaft assembly kit is suitable for remote control boats, speed boats, ships, boats, toy boat upgrade parts, etc.5. Package List: Including one remote control boat drive shaft assemble kit. It is equipped with a universal joint, suitable for most motors.Specification:Item Type: Ship Model Shaft AssemblyShaft Material: Stainless SteelPropeller Blade Material: PlasticColor: As Pictures ShownWeight: Approx. 27g/1.0ozShaft Length: Approx. 10cm/3.9inShaft Sleeve: Approx. 5cm/2.0inShaft Diameter: Approx. 4mm/0.15inPropeller Blade: Two Blades Paddle, 36mm/1.4in PaddleApplication: RC Boat, Hand Made Boat Modle, etc.Package List:1 x Ship Model Shaft Assembly