This is the Servo Saver Tube with Clamping adjuster Nutfor the Arrna 1/8 Truck, Buggy Kit from Hot RacingFEATURESAluminum servo saver tube, anodized black and red in colorSteel servo saver springClamping adjuster NutINCLUDESServo Saver TubeSpring (4.5 Turn)2x5mm Socket Head Cap ScrewCommentReplace parts of ARA AR340122, AR340065 or ARA340163