RC Jet Boat Water Thruster Jet Pump 40mm Turbo Turbojet for 70-120cm RC Jet Boat Speed Jet Boat 775 36/40 series motors -- Description -- The drive shaft has two high speed ball bearings, that makes the thruster works stably and smoothly. The tail of the thruster has an automatic water inlet nipple to cool the motor and ESC. Comes with guardrail and Lubricant filling nipple for shaft. Suitable for boat models 70cm-120cm length. -- Specification & Features -- - Main Material: Plastic - Weight: 297g - Motor installation hole distance: 25mm/29mm, suitable for 775 550 brush motors and 36/40 series brushless motors - Water outlet diameter: 33mm - Propeller size: 40mm, 3-blades, Nylon - Shaft diameter: 5mm - Coupling(for motor): 5mm - Thruster size: 204mm(length)*62mm(width)*66mm(height) -- Item Contains -- 1x 40mm RC Jet Boat Water Thruster Jet Pump 1x 60cm 3x5mm silicon tube 1x tube bushing 1x antenna mount 1x rubber bellow 1x M6 water outer nipple